Alright, let's work through 80708810 times 88370306 step by step
80708810 × 88370306 = 88370306 × (80708810)
+ 88370306 × 0 which equals 0
+ 88370306 × 10 yielding 883703060
+ 88370306 × 800 that equals 70696244800
+ 88370306 × 8000 giving us 706962448000
+ 88370306 × 00000 resulting in 0
+ 88370306 × 700000 which equals 61859214200000
+ 88370306 × 0000000 what gives us 0
+ 88370306 × 80000000 giving us 7069624480000000

= 7132262236595860
