Alright, let's work through 89021995 times 56413518 step by step
89021995 × 56413518 = 56413518 × (89021995)
+ 56413518 × 5 yielding 282067590
+ 56413518 × 90 that is equal 5077216620
+ 56413518 × 900 resulting in 50772166200
+ 56413518 × 1000 what gives us 56413518000
+ 56413518 × 20000 which equals 1128270360000
+ 56413518 × 000000 producing 0
+ 56413518 × 9000000 that equals 507721662000000
+ 56413518 × 80000000 producing 4513081440000000

= 5022043917328410
