Alright, let's work through 80168399 times 37236855 step by step
80168399 × 37236855 = 37236855 × (80168399)
+ 37236855 × 9 that is equal 335131695
+ 37236855 × 90 that results in 3351316950
+ 37236855 × 300 resulting in 11171056500
+ 37236855 × 8000 that results in 297894840000
+ 37236855 × 60000 that is equal 2234211300000
+ 37236855 × 100000 that is equal 3723685500000
+ 37236855 × 0000000 that results in 0
+ 37236855 × 80000000 yielding 2978948400000000

= 2985219049145145
