Alright, let's work through 86886560 times 45997621 step by step
86886560 × 45997621 = 45997621 × (86886560)
+ 45997621 × 0 producing 0
+ 45997621 × 60 producing 2759857260
+ 45997621 × 500 that is equal 22998810500
+ 45997621 × 6000 yielding 275985726000
+ 45997621 × 80000 that is equal 3679809680000
+ 45997621 × 800000 that is equal 36798096800000
+ 45997621 × 6000000 resulting in 275985726000000
+ 45997621 × 80000000 that is equal 3679809680000000

= 3996575056873760
