Let's get this math done. We have 824 and we're going to multiply it by 26. This is the same as taking 824 and adding it to itself 26 times.
Step 1: 0 + 824 = 824
Step 2: 824 + 824 = 1648
Step 3: 1648 + 824 = 2472
Step 4: 2472 + 824 = 3296
Step 5: 3296 + 824 = 4120
Step 6: 4120 + 824 = 4944
Step 7: 4944 + 824 = 5768
Step 8: 5768 + 824 = 6592
Step 9: 6592 + 824 = 7416
Step 10: 7416 + 824 = 8240
Step 11: 8240 + 824 = 9064
Step 12: 9064 + 824 = 9888
Step 13: 9888 + 824 = 10712
Step 14: 10712 + 824 = 11536
Step 15: 11536 + 824 = 12360
Step 16: 12360 + 824 = 13184
Step 17: 13184 + 824 = 14008
Step 18: 14008 + 824 = 14832
Step 19: 14832 + 824 = 15656
Step 20: 15656 + 824 = 16480
Step 21: 16480 + 824 = 17304
Step 22: 17304 + 824 = 18128
Step 23: 18128 + 824 = 18952
Step 24: 18952 + 824 = 19776
Step 25: 19776 + 824 = 20600
Step 26: 20600 + 824 = 21424

So, 824*26 = 21424