Alright, let's work through 80668720 times 48932803 step by step
80668720 × 48932803 = 48932803 × (80668720)
+ 48932803 × 0 producing 0
+ 48932803 × 20 that is equal 978656060
+ 48932803 × 700 giving us 34252962100
+ 48932803 × 8000 which equals 391462424000
+ 48932803 × 60000 resulting in 2935968180000
+ 48932803 × 600000 giving us 29359681800000
+ 48932803 × 0000000 producing 0
+ 48932803 × 80000000 what gives us 3914624240000000

= 3947346584022160
