No problem, we've got 1304 and 1005 to multiply
1304 × 1005 = 1005 × (1304)
+ 1005 × 4 giving us 4020
+ 1005 × 00 what gives us 0
+ 1005 × 300 what gives us 301500
+ 1005 × 1000 that equals 1005000

= 1310520
