Alright, let's work through 66240685 times 1316563 step by step
66240685 × 1316563 = 1316563 × (66240685)
+ 1316563 × 5 which equals 6582815
+ 1316563 × 80 giving us 105325040
+ 1316563 × 600 that is equal 789937800
+ 1316563 × 0000 that results in 0
+ 1316563 × 40000 that results in 52662520000
+ 1316563 × 200000 that equals 263312600000
+ 1316563 × 6000000 producing 7899378000000
+ 1316563 × 60000000 what gives us 78993780000000

= 87210034965655
