Alright, let's work through 84169314 times 83409596 step by step
84169314 × 83409596 = 83409596 × (84169314)
+ 83409596 × 4 giving us 333638384
+ 83409596 × 10 that equals 834095960
+ 83409596 × 300 giving us 25022878800
+ 83409596 × 9000 which equals 750686364000
+ 83409596 × 60000 yielding 5004575760000
+ 83409596 × 100000 yielding 8340959600000
+ 83409596 × 4000000 yielding 333638384000000
+ 83409596 × 80000000 what gives us 6672767680000000

= 7020528476337144
