Alright, let's work through 80847700 times 53525042 step by step
80847700 × 53525042 = 53525042 × (80847700)
+ 53525042 × 0 yielding 0
+ 53525042 × 00 that results in 0
+ 53525042 × 700 yielding 37467529400
+ 53525042 × 7000 that results in 374675294000
+ 53525042 × 40000 that is equal 2141001680000
+ 53525042 × 800000 that results in 42820033600000
+ 53525042 × 0000000 resulting in 0
+ 53525042 × 80000000 what gives us 4282003360000000

= 4327376538103400
