OK, let's work through this together. We're starting with 916 and we're going to multiply it by 28, which means we add 916 to itself 28 times.
Step 1: 0 + 916 = 916
Step 2: 916 + 916 = 1832
Step 3: 1832 + 916 = 2748
Step 4: 2748 + 916 = 3664
Step 5: 3664 + 916 = 4580
Step 6: 4580 + 916 = 5496
Step 7: 5496 + 916 = 6412
Step 8: 6412 + 916 = 7328
Step 9: 7328 + 916 = 8244
Step 10: 8244 + 916 = 9160
Step 11: 9160 + 916 = 10076
Step 12: 10076 + 916 = 10992
Step 13: 10992 + 916 = 11908
Step 14: 11908 + 916 = 12824
Step 15: 12824 + 916 = 13740
Step 16: 13740 + 916 = 14656
Step 17: 14656 + 916 = 15572
Step 18: 15572 + 916 = 16488
Step 19: 16488 + 916 = 17404
Step 20: 17404 + 916 = 18320
Step 21: 18320 + 916 = 19236
Step 22: 19236 + 916 = 20152
Step 23: 20152 + 916 = 21068
Step 24: 21068 + 916 = 21984
Step 25: 21984 + 916 = 22900
Step 26: 22900 + 916 = 23816
Step 27: 23816 + 916 = 24732
Step 28: 24732 + 916 = 25648

So, 916*28 = 25648