Alright, let's work through 72101024 times 50614893 step by step
72101024 × 50614893 = 50614893 × (72101024)
+ 50614893 × 4 that results in 202459572
+ 50614893 × 20 that results in 1012297860
+ 50614893 × 000 which equals 0
+ 50614893 × 1000 that is equal 50614893000
+ 50614893 × 00000 that is equal 0
+ 50614893 × 100000 resulting in 5061489300000
+ 50614893 × 2000000 which equals 101229786000000
+ 50614893 × 70000000 yielding 3543042510000000

= 3649385614950432
