Alright, let's work through 87077265 times 72105794 step by step
87077265 × 72105794 = 72105794 × (87077265)
+ 72105794 × 5 that equals 360528970
+ 72105794 × 60 that is equal 4326347640
+ 72105794 × 200 resulting in 14421158800
+ 72105794 × 7000 yielding 504740558000
+ 72105794 × 70000 that is equal 5047405580000
+ 72105794 × 000000 what gives us 0
+ 72105794 × 7000000 giving us 504740558000000
+ 72105794 × 80000000 resulting in 5768463520000000

= 6278775332173410
