diff --git a/Axel/src/de/hs_mannheim/informatik/spreadsheet/Axel.java b/Axel/src/de/hs_mannheim/informatik/spreadsheet/Axel.java
index fac0c3e..daa42ad 100644
--- a/Axel/src/de/hs_mannheim/informatik/spreadsheet/Axel.java
+++ b/Axel/src/de/hs_mannheim/informatik/spreadsheet/Axel.java
@@ -41,7 +41,6 @@ public class Axel {
 					form+=command.charAt(i);
 				}
 			}
-			
 			spr.put(cell, form);
 			
 		}while(true);
diff --git a/Axel/src/de/hs_mannheim/informatik/spreadsheet/Spreadsheet.java b/Axel/src/de/hs_mannheim/informatik/spreadsheet/Spreadsheet.java
index 961b416..471104a 100644
--- a/Axel/src/de/hs_mannheim/informatik/spreadsheet/Spreadsheet.java
+++ b/Axel/src/de/hs_mannheim/informatik/spreadsheet/Spreadsheet.java
@@ -74,10 +74,9 @@ public class Spreadsheet {
 			return cellName.charAt(1) - '1';
 		}else {
 			int Row = 0;
-			Row +=((cellName.charAt(1)-48)*10);
-			Row +=(cellName.charAt(2)-49);
-			System.out.println(Row);
-			return Row;
+			Row +=((cellName.charAt(1)-'0')*10);
+			Row +=(cellName.charAt(2)-'0');
+			return Row-1;
 		}
 	}
 	// -----
@@ -128,11 +127,23 @@ public class Spreadsheet {
 	private void evaluateCell(int row, int col) {
 		String formula = cells[row][col].getFormula();
 		String result = "";
-
+		int offset = 0;
+		int offsetEnd = 0;
+		int diff=0;
+		for(int i = 0; i<formula.length();i++) {
+			if(formula.charAt(i)=='(') {
+				offset=i+1;
+			}else if(formula.charAt(i)==')') {
+				offsetEnd=i;
+			}
+			else if(formula.charAt(i)==':') {
+				diff=i;
+			}
+		}
 		if (formula.startsWith("SUMME(")) {  // e.g. SUMME(A3:A8)
-			result += sum(formula.substring(6, 8), formula.substring(9, 11)); 
+			result += sum(formula.substring(offset, diff), formula.substring(diff+1,offsetEnd)); 
 		}else if (formula.startsWith("PRODUKT(")) {  // e.g. PRODUKT(A3:B9)
-			result = "TODO"; // TODO
+			result += prod(formula.substring(offset, diff), formula.substring(diff+1, offsetEnd));; // TODO
 		}else if (formula.startsWith("MITTELWERT(")) {  // e.g. MITTELWERT(A3:A5)
 			result = "TODO"; // TODO
 		}else if (formula.startsWith("STABW(")) { // e.g. STABW(C6:D8) -> Standardabweichung
@@ -162,12 +173,35 @@ public class Spreadsheet {
 		long res = 0;
 		for(int j = getRow(startCellName); j< (getRow(endCellName)+1);j++){
 			for(int i = getCol(startCellName); i< (getCol(endCellName)+1);i++) {
-				if(!cells[j][i].getValue().isBlank())
+				if(!cells[j][i].getValue().isBlank()) {
 					res += Long.parseLong(cells[j][i].getValue());
+				}
 			}
 		}
 		return res;
 	}
+	/**
+	 * Method for calculating the product of a rectangular block of cells, such as from A1 to B3.
+	 * @param startCellName The name of the cell in the upper left corner of the rectangle.
+	 * @param endCellName The name of the cell in the lower right corner of the rectangle.
+	 * @return The product calculated.
+	 */
+	private long prod(String startCellName, String endCellName) {
+		long res = 1;
+		boolean anyNumbers= false;
+		for(int j = getRow(startCellName); j< (getRow(endCellName)+1);j++){
+			for(int i = getCol(startCellName); i< (getCol(endCellName)+1);i++) {
+				if(!cells[j][i].getValue().isBlank()) {
+					res*= Long.parseLong(cells[j][i].getValue());
+					anyNumbers = true;
+				}
+			}
+		}
+		if(anyNumbers)
+			return res;
+		else
+			return 0;
+	}
 
 	/**
 	 * This method calculates the result of a "normal" algebraic expression. It only needs to support
@@ -197,7 +231,6 @@ public class Spreadsheet {
 		}
 		
 		for(int i = 2; i<args.size();) {
-			System.out.println(args.get(i));
 			String val = "";
 			switch(args.get(i-1)) {
 				case "+":