Sure thing! We've got 985 and we're gonna multiply it by 40. That's the same as adding 985 to itself 40 times.
Step 1: 0 + 985 = 985
Step 2: 985 + 985 = 1970
Step 3: 1970 + 985 = 2955
Step 4: 2955 + 985 = 3940
Step 5: 3940 + 985 = 4925
Step 6: 4925 + 985 = 5910
Step 7: 5910 + 985 = 6895
Step 8: 6895 + 985 = 7880
Step 9: 7880 + 985 = 8865
Step 10: 8865 + 985 = 9850
Step 11: 9850 + 985 = 10835
Step 12: 10835 + 985 = 11820
Step 13: 11820 + 985 = 12805
Step 14: 12805 + 985 = 13790
Step 15: 13790 + 985 = 14775
Step 16: 14775 + 985 = 15760
Step 17: 15760 + 985 = 16745
Step 18: 16745 + 985 = 17730
Step 19: 17730 + 985 = 18715
Step 20: 18715 + 985 = 19700
Step 21: 19700 + 985 = 20685
Step 22: 20685 + 985 = 21670
Step 23: 21670 + 985 = 22655
Step 24: 22655 + 985 = 23640
Step 25: 23640 + 985 = 24625
Step 26: 24625 + 985 = 25610
Step 27: 25610 + 985 = 26595
Step 28: 26595 + 985 = 27580
Step 29: 27580 + 985 = 28565
Step 30: 28565 + 985 = 29550
Step 31: 29550 + 985 = 30535
Step 32: 30535 + 985 = 31520
Step 33: 31520 + 985 = 32505
Step 34: 32505 + 985 = 33490
Step 35: 33490 + 985 = 34475
Step 36: 34475 + 985 = 35460
Step 37: 35460 + 985 = 36445
Step 38: 36445 + 985 = 37430
Step 39: 37430 + 985 = 38415
Step 40: 38415 + 985 = 39400

So, 985*40 = 39400