No problem, we've got 7894 and 525 to multiply
7894 × 525 = 525 × (7894)
+ 525 × 4 what gives us 2100
+ 525 × 90 resulting in 47250
+ 525 × 800 that equals 420000
+ 525 × 7000 that results in 3675000

= 4144350
