Alright, let's work through 78061264 times 23742686 step by step
78061264 × 23742686 = 23742686 × (78061264)
+ 23742686 × 4 yielding 94970744
+ 23742686 × 60 yielding 1424561160
+ 23742686 × 200 producing 4748537200
+ 23742686 × 1000 which equals 23742686000
+ 23742686 × 60000 which equals 1424561160000
+ 23742686 × 000000 that is equal 0
+ 23742686 × 8000000 giving us 189941488000000
+ 23742686 × 70000000 what gives us 1661988020000000

= 1853384079915104
