Alright, let's work through 87742103 times 39613828 step by step
87742103 × 39613828 = 39613828 × (87742103)
+ 39613828 × 3 that is equal 118841484
+ 39613828 × 00 what gives us 0
+ 39613828 × 100 that results in 3961382800
+ 39613828 × 2000 resulting in 79227656000
+ 39613828 × 40000 yielding 1584553120000
+ 39613828 × 700000 that results in 27729679600000
+ 39613828 × 7000000 resulting in 277296796000000
+ 39613828 × 80000000 yielding 3169106240000000

= 3475800576600284
