Alright, let's work through 72078447 times 78524756 step by step
72078447 × 78524756 = 78524756 × (72078447)
+ 78524756 × 7 that equals 549673292
+ 78524756 × 40 giving us 3140990240
+ 78524756 × 400 that is equal 31409902400
+ 78524756 × 8000 producing 628198048000
+ 78524756 × 70000 giving us 5496732920000
+ 78524756 × 000000 what gives us 0
+ 78524756 × 2000000 producing 157049512000000
+ 78524756 × 70000000 yielding 5496732920000000

= 5659942463533932
