Alright, let's work through 7477773 times 47380381 step by step
7477773 × 47380381 = 47380381 × (7477773)
+ 47380381 × 3 resulting in 142141143
+ 47380381 × 70 resulting in 3316626670
+ 47380381 × 700 yielding 33166266700
+ 47380381 × 7000 that is equal 331662667000
+ 47380381 × 70000 giving us 3316626670000
+ 47380381 × 400000 producing 18952152400000
+ 47380381 × 7000000 what gives us 331662667000000

= 354299733771513
