Alright, let's work through 8521341 times 87440678 step by step
8521341 × 87440678 = 87440678 × (8521341)
+ 87440678 × 1 giving us 87440678
+ 87440678 × 40 producing 3497627120
+ 87440678 × 300 resulting in 26232203400
+ 87440678 × 1000 that results in 87440678000
+ 87440678 × 20000 what gives us 1748813560000
+ 87440678 × 500000 that results in 43720339000000
+ 87440678 × 8000000 that results in 699525424000000

= 745111834509198
