No problem, we've got 3615 and 1300 to multiply
3615 × 1300 = 1300 × (3615)
+ 1300 × 5 what gives us 6500
+ 1300 × 10 resulting in 13000
+ 1300 × 600 that equals 780000
+ 1300 × 3000 giving us 3900000

= 4699500
