Alright, let's work through 42481534 times 40447894 step by step
42481534 × 40447894 = 40447894 × (42481534)
+ 40447894 × 4 that equals 161791576
+ 40447894 × 30 producing 1213436820
+ 40447894 × 500 that results in 20223947000
+ 40447894 × 1000 yielding 40447894000
+ 40447894 × 80000 resulting in 3235831520000
+ 40447894 × 400000 that equals 16179157600000
+ 40447894 × 2000000 that results in 80895788000000
+ 40447894 × 40000000 giving us 1617915760000000

= 1718288584189396
