Alright, let's work through 85674508 times 421447 step by step
85674508 × 421447 = 421447 × (85674508)
+ 421447 × 8 giving us 3371576
+ 421447 × 00 which equals 0
+ 421447 × 500 giving us 210723500
+ 421447 × 4000 giving us 1685788000
+ 421447 × 70000 resulting in 29501290000
+ 421447 × 600000 what gives us 252868200000
+ 421447 × 5000000 what gives us 2107235000000
+ 421447 × 80000000 producing 33715760000000

= 36107264373076
