We're going to solve 78423821 multiplied by 42413525
78423821 × 42413525 = 42413525 × (78423821)
+ 42413525 × 1 resulting in 42413525
+ 42413525 × 20 resulting in 848270500
+ 42413525 × 800 that results in 33930820000
+ 42413525 × 3000 resulting in 127240575000
+ 42413525 × 20000 giving us 848270500000
+ 42413525 × 400000 yielding 16965410000000
+ 42413525 × 8000000 that is equal 339308200000000
+ 42413525 × 70000000 yielding 2968946750000000

= 3326230692579025
