Alright, let's work through 78873583 times 79912348 step by step
78873583 × 79912348 = 79912348 × (78873583)
+ 79912348 × 3 what gives us 239737044
+ 79912348 × 80 that equals 6392987840
+ 79912348 × 500 yielding 39956174000
+ 79912348 × 3000 which equals 239737044000
+ 79912348 × 70000 giving us 5593864360000
+ 79912348 × 800000 that results in 63929878400000
+ 79912348 × 8000000 yielding 639298784000000
+ 79912348 × 70000000 that equals 5593864360000000

= 6302973212702884
