Alright, let's work through 78729815 times 56348662 step by step
78729815 × 56348662 = 56348662 × (78729815)
+ 56348662 × 5 what gives us 281743310
+ 56348662 × 10 what gives us 563486620
+ 56348662 × 800 that equals 45078929600
+ 56348662 × 9000 resulting in 507137958000
+ 56348662 × 20000 that is equal 1126973240000
+ 56348662 × 700000 what gives us 39444063400000
+ 56348662 × 8000000 what gives us 450789296000000
+ 56348662 × 70000000 what gives us 3944406340000000

= 4436319734757530
