Alright, let's work through 74757543 times 20645692 step by step
74757543 × 20645692 = 20645692 × (74757543)
+ 20645692 × 3 what gives us 61937076
+ 20645692 × 40 producing 825827680
+ 20645692 × 500 which equals 10322846000
+ 20645692 × 7000 giving us 144519844000
+ 20645692 × 50000 that equals 1032284600000
+ 20645692 × 700000 that equals 14451984400000
+ 20645692 × 4000000 yielding 82582768000000
+ 20645692 × 70000000 resulting in 1445198440000000

= 1543421207454756
