Alright, let's work through 87870912 times 7527864 step by step
87870912 × 7527864 = 7527864 × (87870912)
+ 7527864 × 2 which equals 15055728
+ 7527864 × 10 resulting in 75278640
+ 7527864 × 900 giving us 6775077600
+ 7527864 × 0000 that is equal 0
+ 7527864 × 70000 that is equal 526950480000
+ 7527864 × 800000 that results in 6022291200000
+ 7527864 × 7000000 which equals 52695048000000
+ 7527864 × 80000000 that is equal 602229120000000

= 661480275091968
