Alright, let's work through 47028778 times 87678669 step by step
47028778 × 87678669 = 87678669 × (47028778)
+ 87678669 × 8 giving us 701429352
+ 87678669 × 70 what gives us 6137506830
+ 87678669 × 700 that equals 61375068300
+ 87678669 × 8000 what gives us 701429352000
+ 87678669 × 20000 that results in 1753573380000
+ 87678669 × 000000 that is equal 0
+ 87678669 × 7000000 producing 613750683000000
+ 87678669 × 40000000 what gives us 3507146760000000

= 4123420659736482
