Alright, let's work through 89089941 times 56548509 step by step
89089941 × 56548509 = 56548509 × (89089941)
+ 56548509 × 1 that is equal 56548509
+ 56548509 × 40 giving us 2261940360
+ 56548509 × 900 what gives us 50893658100
+ 56548509 × 9000 yielding 508936581000
+ 56548509 × 80000 resulting in 4523880720000
+ 56548509 × 000000 that results in 0
+ 56548509 × 9000000 that results in 508936581000000
+ 56548509 × 80000000 that results in 4523880720000000

= 5037903330447969
