Alright, let's work through 80052377 times 10102538 step by step
80052377 × 10102538 = 10102538 × (80052377)
+ 10102538 × 7 which equals 70717766
+ 10102538 × 70 what gives us 707177660
+ 10102538 × 300 which equals 3030761400
+ 10102538 × 2000 that results in 20205076000
+ 10102538 × 50000 yielding 505126900000
+ 10102538 × 000000 that results in 0
+ 10102538 × 0000000 yielding 0
+ 10102538 × 80000000 yielding 808203040000000

= 808732180632826
