Alright, let's work through 85429754 times 75698271 step by step
85429754 × 75698271 = 75698271 × (85429754)
+ 75698271 × 4 resulting in 302793084
+ 75698271 × 50 what gives us 3784913550
+ 75698271 × 700 giving us 52988789700
+ 75698271 × 9000 resulting in 681284439000
+ 75698271 × 20000 yielding 1513965420000
+ 75698271 × 400000 that is equal 30279308400000
+ 75698271 × 5000000 that results in 378491355000000
+ 75698271 × 80000000 that is equal 6055861680000000

= 6466884669755334
