Alright, let's work through 27397109 times 42489947 step by step
27397109 × 42489947 = 42489947 × (27397109)
+ 42489947 × 9 that results in 382409523
+ 42489947 × 00 yielding 0
+ 42489947 × 100 producing 4248994700
+ 42489947 × 7000 resulting in 297429629000
+ 42489947 × 90000 producing 3824095230000
+ 42489947 × 300000 which equals 12746984100000
+ 42489947 × 7000000 that is equal 297429629000000
+ 42489947 × 20000000 giving us 849798940000000

= 1164101709363223
