No problem, we've got 3898 and 6920 to multiply
3898 × 6920 = 6920 × (3898)
+ 6920 × 8 that results in 55360
+ 6920 × 90 that equals 622800
+ 6920 × 800 what gives us 5536000
+ 6920 × 3000 which equals 20760000

= 26974160
