Let's calculate 89640879 x 98765012
89640879 × 98765012 = 98765012 × (89640879)
+ 98765012 × 9 yielding 888885108
+ 98765012 × 70 giving us 6913550840
+ 98765012 × 800 giving us 79012009600
+ 98765012 × 0000 that results in 0
+ 98765012 × 40000 which equals 3950600480000
+ 98765012 × 600000 yielding 59259007200000
+ 98765012 × 9000000 that results in 888885108000000
+ 98765012 × 80000000 producing 7901200960000000

= 8853382490125548
