Alright, let's work through 78247042 times 89304615 step by step
78247042 × 89304615 = 89304615 × (78247042)
+ 89304615 × 2 what gives us 178609230
+ 89304615 × 40 that results in 3572184600
+ 89304615 × 000 giving us 0
+ 89304615 × 7000 what gives us 625132305000
+ 89304615 × 40000 resulting in 3572184600000
+ 89304615 × 200000 what gives us 17860923000000
+ 89304615 × 8000000 that equals 714436920000000
+ 89304615 × 70000000 giving us 6251323050000000

= 6987821960698830
