Alright, let's work through 39953003 times 42700003 step by step
39953003 × 42700003 = 42700003 × (39953003)
+ 42700003 × 3 that results in 128100009
+ 42700003 × 00 which equals 0
+ 42700003 × 000 that results in 0
+ 42700003 × 3000 which equals 128100009000
+ 42700003 × 50000 resulting in 2135000150000
+ 42700003 × 900000 yielding 38430002700000
+ 42700003 × 9000000 producing 384300027000000
+ 42700003 × 30000000 yielding 1281000090000000

= 1705993347959009
