Alright, let's solve this math problem step by step. First, we have the number 77. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 66. So, we're going to take the number 77 and add it to itself 66 times.
Step 1: 0 + 77 = 77
Step 2: 77 + 77 = 154
Step 3: 154 + 77 = 231
Step 4: 231 + 77 = 308
Step 5: 308 + 77 = 385
Step 6: 385 + 77 = 462
Step 7: 462 + 77 = 539
Step 8: 539 + 77 = 616
Step 9: 616 + 77 = 693
Step 10: 693 + 77 = 770
Step 11: 770 + 77 = 847
Step 12: 847 + 77 = 924
Step 13: 924 + 77 = 1001
Step 14: 1001 + 77 = 1078
Step 15: 1078 + 77 = 1155
Step 16: 1155 + 77 = 1232
Step 17: 1232 + 77 = 1309
Step 18: 1309 + 77 = 1386
Step 19: 1386 + 77 = 1463
Step 20: 1463 + 77 = 1540
Step 21: 1540 + 77 = 1617
Step 22: 1617 + 77 = 1694
Step 23: 1694 + 77 = 1771
Step 24: 1771 + 77 = 1848
Step 25: 1848 + 77 = 1925
Step 26: 1925 + 77 = 2002
Step 27: 2002 + 77 = 2079
Step 28: 2079 + 77 = 2156
Step 29: 2156 + 77 = 2233
Step 30: 2233 + 77 = 2310
Step 31: 2310 + 77 = 2387
Step 32: 2387 + 77 = 2464
Step 33: 2464 + 77 = 2541
Step 34: 2541 + 77 = 2618
Step 35: 2618 + 77 = 2695
Step 36: 2695 + 77 = 2772
Step 37: 2772 + 77 = 2849
Step 38: 2849 + 77 = 2926
Step 39: 2926 + 77 = 3003
Step 40: 3003 + 77 = 3080
Step 41: 3080 + 77 = 3157
Step 42: 3157 + 77 = 3234
Step 43: 3234 + 77 = 3311
Step 44: 3311 + 77 = 3388
Step 45: 3388 + 77 = 3465
Step 46: 3465 + 77 = 3542
Step 47: 3542 + 77 = 3619
Step 48: 3619 + 77 = 3696
Step 49: 3696 + 77 = 3773
Step 50: 3773 + 77 = 3850
Step 51: 3850 + 77 = 3927
Step 52: 3927 + 77 = 4004
Step 53: 4004 + 77 = 4081
Step 54: 4081 + 77 = 4158
Step 55: 4158 + 77 = 4235
Step 56: 4235 + 77 = 4312
Step 57: 4312 + 77 = 4389
Step 58: 4389 + 77 = 4466
Step 59: 4466 + 77 = 4543
Step 60: 4543 + 77 = 4620
Step 61: 4620 + 77 = 4697
Step 62: 4697 + 77 = 4774
Step 63: 4774 + 77 = 4851
Step 64: 4851 + 77 = 4928
Step 65: 4928 + 77 = 5005
Step 66: 5005 + 77 = 5082

So, 77*66 = 5082