No problem, we've got 7756 and 509 to multiply
7756 × 509 = 509 × (7756)
+ 509 × 6 which equals 3054
+ 509 × 50 that results in 25450
+ 509 × 700 what gives us 356300
+ 509 × 7000 what gives us 3563000

= 3947804
