Alright, let's work through 87375634 times 52903683 step by step
87375634 × 52903683 = 52903683 × (87375634)
+ 52903683 × 4 that is equal 211614732
+ 52903683 × 30 resulting in 1587110490
+ 52903683 × 600 resulting in 31742209800
+ 52903683 × 5000 producing 264518415000
+ 52903683 × 70000 that results in 3703257810000
+ 52903683 × 300000 that is equal 15871104900000
+ 52903683 × 7000000 giving us 370325781000000
+ 52903683 × 80000000 that results in 4232294640000000

= 4622492843060022
