Alright, let's work through 12150002 times 57801540 step by step
12150002 × 57801540 = 57801540 × (12150002)
+ 57801540 × 2 which equals 115603080
+ 57801540 × 00 that is equal 0
+ 57801540 × 000 yielding 0
+ 57801540 × 0000 that results in 0
+ 57801540 × 50000 that results in 2890077000000
+ 57801540 × 100000 producing 5780154000000
+ 57801540 × 2000000 that results in 115603080000000
+ 57801540 × 10000000 that equals 578015400000000

= 702288826603080
