Alright, let's work through 82245072 times 7878512 step by step
82245072 × 7878512 = 7878512 × (82245072)
+ 7878512 × 2 which equals 15757024
+ 7878512 × 70 that is equal 551495840
+ 7878512 × 000 which equals 0
+ 7878512 × 5000 resulting in 39392560000
+ 7878512 × 40000 resulting in 315140480000
+ 7878512 × 200000 resulting in 1575702400000
+ 7878512 × 2000000 giving us 15757024000000
+ 7878512 × 80000000 what gives us 630280960000000

= 647968786692864
