Alright, let's work through 90195872 times 47933909 step by step
90195872 × 47933909 = 47933909 × (90195872)
+ 47933909 × 2 resulting in 95867818
+ 47933909 × 70 that results in 3355373630
+ 47933909 × 800 yielding 38347127200
+ 47933909 × 5000 what gives us 239669545000
+ 47933909 × 90000 producing 4314051810000
+ 47933909 × 100000 giving us 4793390900000
+ 47933909 × 0000000 that results in 0
+ 47933909 × 90000000 yielding 4314051810000000

= 4323440720623648
