Our goats are pet wethers, and I give them all our veggie peelings except raw potato. They also have fruit thats gone past it best, stale cake and bread (in moderation) and digestive biscuits as a treat (if I have to get them in for some reason).
3. Click the lower right corner of cell C1 and drag the formula down. Result: 4. To change the negative numbers to zero but leave the positive numbers unchanged, instead of =A1-B1, use =MAX(0,A1-B1) and drag the function down. Result: Explanation: the MAX function returns the maximum of two values. If the result of the formula is negative, the function returns 0.
1 Therefore, the Indirect formula returns the value from cell E3.  In cell A4, the Indirect function returns a reference to the range C4:E4, and then passes this to the Excel SUM function. The SUM function therefore returns the sum of cells C4, D4 & E4 (i.e. 4 + 6 + 2).