Alright, let's work through 79301940 times 63309056 step by step
79301940 × 63309056 = 63309056 × (79301940)
+ 63309056 × 0 that is equal 0
+ 63309056 × 40 that results in 2532362240
+ 63309056 × 900 which equals 56978150400
+ 63309056 × 1000 which equals 63309056000
+ 63309056 × 00000 yielding 0
+ 63309056 × 300000 that results in 18992716800000
+ 63309056 × 9000000 that results in 569781504000000
+ 63309056 × 70000000 what gives us 4431633920000000

= 5020530960368640
