No problem, we've got 1607 and 6000 to multiply
1607 × 6000 = 6000 × (1607)
+ 6000 × 7 that is equal 42000
+ 6000 × 00 which equals 0
+ 6000 × 600 what gives us 3600000
+ 6000 × 1000 which equals 6000000

= 9642000
