OK, let's work through this together. We're starting with 560 and we're going to multiply it by 23, which means we add 560 to itself 23 times.
Step 1: 0 + 560 = 560
Step 2: 560 + 560 = 1120
Step 3: 1120 + 560 = 1680
Step 4: 1680 + 560 = 2240
Step 5: 2240 + 560 = 2800
Step 6: 2800 + 560 = 3360
Step 7: 3360 + 560 = 3920
Step 8: 3920 + 560 = 4480
Step 9: 4480 + 560 = 5040
Step 10: 5040 + 560 = 5600
Step 11: 5600 + 560 = 6160
Step 12: 6160 + 560 = 6720
Step 13: 6720 + 560 = 7280
Step 14: 7280 + 560 = 7840
Step 15: 7840 + 560 = 8400
Step 16: 8400 + 560 = 8960
Step 17: 8960 + 560 = 9520
Step 18: 9520 + 560 = 10080
Step 19: 10080 + 560 = 10640
Step 20: 10640 + 560 = 11200
Step 21: 11200 + 560 = 11760
Step 22: 11760 + 560 = 12320
Step 23: 12320 + 560 = 12880

So, 560*23 = 12880