Let's get this math done. We have 434 and we're going to multiply it by 50. This is the same as taking 434 and adding it to itself 50 times.
Step 1: 0 + 434 = 434
Step 2: 434 + 434 = 868
Step 3: 868 + 434 = 1302
Step 4: 1302 + 434 = 1736
Step 5: 1736 + 434 = 2170
Step 6: 2170 + 434 = 2604
Step 7: 2604 + 434 = 3038
Step 8: 3038 + 434 = 3472
Step 9: 3472 + 434 = 3906
Step 10: 3906 + 434 = 4340
Step 11: 4340 + 434 = 4774
Step 12: 4774 + 434 = 5208
Step 13: 5208 + 434 = 5642
Step 14: 5642 + 434 = 6076
Step 15: 6076 + 434 = 6510
Step 16: 6510 + 434 = 6944
Step 17: 6944 + 434 = 7378
Step 18: 7378 + 434 = 7812
Step 19: 7812 + 434 = 8246
Step 20: 8246 + 434 = 8680
Step 21: 8680 + 434 = 9114
Step 22: 9114 + 434 = 9548
Step 23: 9548 + 434 = 9982
Step 24: 9982 + 434 = 10416
Step 25: 10416 + 434 = 10850
Step 26: 10850 + 434 = 11284
Step 27: 11284 + 434 = 11718
Step 28: 11718 + 434 = 12152
Step 29: 12152 + 434 = 12586
Step 30: 12586 + 434 = 13020
Step 31: 13020 + 434 = 13454
Step 32: 13454 + 434 = 13888
Step 33: 13888 + 434 = 14322
Step 34: 14322 + 434 = 14756
Step 35: 14756 + 434 = 15190
Step 36: 15190 + 434 = 15624
Step 37: 15624 + 434 = 16058
Step 38: 16058 + 434 = 16492
Step 39: 16492 + 434 = 16926
Step 40: 16926 + 434 = 17360
Step 41: 17360 + 434 = 17794
Step 42: 17794 + 434 = 18228
Step 43: 18228 + 434 = 18662
Step 44: 18662 + 434 = 19096
Step 45: 19096 + 434 = 19530
Step 46: 19530 + 434 = 19964
Step 47: 19964 + 434 = 20398
Step 48: 20398 + 434 = 20832
Step 49: 20832 + 434 = 21266
Step 50: 21266 + 434 = 21700

So, 434*50 = 21700