Alright, let's work through 78128980 times 38966788 step by step
78128980 × 38966788 = 38966788 × (78128980)
+ 38966788 × 0 resulting in 0
+ 38966788 × 80 which equals 3117343040
+ 38966788 × 900 resulting in 35070109200
+ 38966788 × 8000 that is equal 311734304000
+ 38966788 × 20000 that results in 779335760000
+ 38966788 × 100000 what gives us 3896678800000
+ 38966788 × 8000000 that is equal 311734304000000
+ 38966788 × 70000000 yielding 2727675160000000

= 3044435400316240
