Alright, let's work through 42151264 times 15547462 step by step
42151264 × 15547462 = 15547462 × (42151264)
+ 15547462 × 4 that results in 62189848
+ 15547462 × 60 that is equal 932847720
+ 15547462 × 200 that equals 3109492400
+ 15547462 × 1000 yielding 15547462000
+ 15547462 × 50000 giving us 777373100000
+ 15547462 × 100000 which equals 1554746200000
+ 15547462 × 2000000 resulting in 31094924000000
+ 15547462 × 40000000 giving us 621898480000000

= 655345175291968
