Alright, let's work through 37689980 times 21360024 step by step
37689980 × 21360024 = 21360024 × (37689980)
+ 21360024 × 0 that equals 0
+ 21360024 × 80 resulting in 1708801920
+ 21360024 × 900 which equals 19224021600
+ 21360024 × 9000 giving us 192240216000
+ 21360024 × 80000 that is equal 1708801920000
+ 21360024 × 600000 which equals 12816014400000
+ 21360024 × 7000000 that is equal 149520168000000
+ 21360024 × 30000000 giving us 640800720000000

= 805058877359520
