Alright, let's work through 80526457 times 39694942 step by step
80526457 × 39694942 = 39694942 × (80526457)
+ 39694942 × 7 that is equal 277864594
+ 39694942 × 50 that is equal 1984747100
+ 39694942 × 400 giving us 15877976800
+ 39694942 × 6000 producing 238169652000
+ 39694942 × 20000 which equals 793898840000
+ 39694942 × 500000 producing 19847471000000
+ 39694942 × 0000000 that is equal 0
+ 39694942 × 80000000 producing 3175595360000000

= 3196493040080494
