Alright, let's work through 7640741 times 52046486 step by step
7640741 × 52046486 = 52046486 × (7640741)
+ 52046486 × 1 resulting in 52046486
+ 52046486 × 40 what gives us 2081859440
+ 52046486 × 700 that results in 36432540200
+ 52046486 × 0000 giving us 0
+ 52046486 × 40000 which equals 2081859440000
+ 52046486 × 600000 that is equal 31227891600000
+ 52046486 × 7000000 producing 364325402000000

= 397673719486126
