Let's calculate 80806155 x 18761255
80806155 × 18761255 = 18761255 × (80806155)
+ 18761255 × 5 which equals 93806275
+ 18761255 × 50 resulting in 938062750
+ 18761255 × 100 that equals 1876125500
+ 18761255 × 6000 yielding 112567530000
+ 18761255 × 00000 yielding 0
+ 18761255 × 800000 that results in 15009004000000
+ 18761255 × 0000000 that results in 0
+ 18761255 × 80000000 giving us 1500900400000000

= 1516024879524525
