No problem, we've got 1545 and 3980 to multiply
1545 × 3980 = 3980 × (1545)
+ 3980 × 5 that equals 19900
+ 3980 × 40 what gives us 159200
+ 3980 × 500 that equals 1990000
+ 3980 × 1000 resulting in 3980000

= 6149100
