Alright, let's solve this math problem step by step. First, we have the number 154. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 40. So, we're going to take the number 154 and add it to itself 40 times.
Step 1: 0 + 154 = 154
Step 2: 154 + 154 = 308
Step 3: 308 + 154 = 462
Step 4: 462 + 154 = 616
Step 5: 616 + 154 = 770
Step 6: 770 + 154 = 924
Step 7: 924 + 154 = 1078
Step 8: 1078 + 154 = 1232
Step 9: 1232 + 154 = 1386
Step 10: 1386 + 154 = 1540
Step 11: 1540 + 154 = 1694
Step 12: 1694 + 154 = 1848
Step 13: 1848 + 154 = 2002
Step 14: 2002 + 154 = 2156
Step 15: 2156 + 154 = 2310
Step 16: 2310 + 154 = 2464
Step 17: 2464 + 154 = 2618
Step 18: 2618 + 154 = 2772
Step 19: 2772 + 154 = 2926
Step 20: 2926 + 154 = 3080
Step 21: 3080 + 154 = 3234
Step 22: 3234 + 154 = 3388
Step 23: 3388 + 154 = 3542
Step 24: 3542 + 154 = 3696
Step 25: 3696 + 154 = 3850
Step 26: 3850 + 154 = 4004
Step 27: 4004 + 154 = 4158
Step 28: 4158 + 154 = 4312
Step 29: 4312 + 154 = 4466
Step 30: 4466 + 154 = 4620
Step 31: 4620 + 154 = 4774
Step 32: 4774 + 154 = 4928
Step 33: 4928 + 154 = 5082
Step 34: 5082 + 154 = 5236
Step 35: 5236 + 154 = 5390
Step 36: 5390 + 154 = 5544
Step 37: 5544 + 154 = 5698
Step 38: 5698 + 154 = 5852
Step 39: 5852 + 154 = 6006
Step 40: 6006 + 154 = 6160

So, 154*40 = 6160