Let's calculate 80823827 x 66201224
80823827 × 66201224 = 66201224 × (80823827)
+ 66201224 × 7 that is equal 463408568
+ 66201224 × 20 that equals 1324024480
+ 66201224 × 800 yielding 52960979200
+ 66201224 × 3000 what gives us 198603672000
+ 66201224 × 20000 yielding 1324024480000
+ 66201224 × 800000 that results in 52960979200000
+ 66201224 × 0000000 that results in 0
+ 66201224 × 80000000 resulting in 5296097920000000

= 5350636275764248
