Alright, let's work through 72503924 times 42395413 step by step
72503924 × 42395413 = 42395413 × (72503924)
+ 42395413 × 4 what gives us 169581652
+ 42395413 × 20 giving us 847908260
+ 42395413 × 900 yielding 38155871700
+ 42395413 × 3000 that equals 127186239000
+ 42395413 × 00000 that results in 0
+ 42395413 × 500000 that equals 21197706500000
+ 42395413 × 2000000 which equals 84790826000000
+ 42395413 × 70000000 what gives us 2967678910000000

= 3073833802100612
