Alright, let's work through 42479901 times 27204373 step by step
42479901 × 27204373 = 27204373 × (42479901)
+ 27204373 × 1 producing 27204373
+ 27204373 × 00 that equals 0
+ 27204373 × 900 which equals 24483935700
+ 27204373 × 9000 what gives us 244839357000
+ 27204373 × 70000 resulting in 1904306110000
+ 27204373 × 400000 that is equal 10881749200000
+ 27204373 × 2000000 giving us 54408746000000
+ 27204373 × 40000000 what gives us 1088174920000000

= 1155639071807073
