No problem, we've got 7435 and 645 to multiply
7435 × 645 = 645 × (7435)
+ 645 × 5 that is equal 3225
+ 645 × 30 what gives us 19350
+ 645 × 400 what gives us 258000
+ 645 × 7000 resulting in 4515000

= 4795575
