Alright, let's work through 28837306 times 48678722 step by step
28837306 × 48678722 = 48678722 × (28837306)
+ 48678722 × 6 resulting in 292072332
+ 48678722 × 00 that results in 0
+ 48678722 × 300 yielding 14603616600
+ 48678722 × 7000 which equals 340751054000
+ 48678722 × 30000 what gives us 1460361660000
+ 48678722 × 800000 that results in 38942977600000
+ 48678722 × 8000000 resulting in 389429776000000
+ 48678722 × 20000000 that results in 973574440000000

= 1403763202002932
