No problem, we've got 4147 and 3665 to multiply
4147 × 3665 = 3665 × (4147)
+ 3665 × 7 that equals 25655
+ 3665 × 40 that is equal 146600
+ 3665 × 100 that is equal 366500
+ 3665 × 4000 that equals 14660000

= 15198755
