Alright, let's work through 66879863 times 55544863 step by step
66879863 × 55544863 = 55544863 × (66879863)
+ 55544863 × 3 what gives us 166634589
+ 55544863 × 60 that results in 3332691780
+ 55544863 × 800 which equals 44435890400
+ 55544863 × 9000 giving us 499903767000
+ 55544863 × 70000 giving us 3888140410000
+ 55544863 × 800000 that results in 44435890400000
+ 55544863 × 6000000 producing 333269178000000
+ 55544863 × 60000000 that is equal 3332691780000000

= 3714832827793769
