Alright, let's work through 89973381 times 45458942 step by step
89973381 × 45458942 = 45458942 × (89973381)
+ 45458942 × 1 which equals 45458942
+ 45458942 × 80 which equals 3636715360
+ 45458942 × 300 yielding 13637682600
+ 45458942 × 3000 giving us 136376826000
+ 45458942 × 70000 that is equal 3182125940000
+ 45458942 × 900000 that is equal 40913047800000
+ 45458942 × 9000000 that equals 409130478000000
+ 45458942 × 80000000 that results in 3636715360000000

= 4090094708422902
