No problem, we've got 3728 and 1980 to multiply
3728 × 1980 = 1980 × (3728)
+ 1980 × 8 what gives us 15840
+ 1980 × 20 what gives us 39600
+ 1980 × 700 that is equal 1386000
+ 1980 × 3000 which equals 5940000

= 7381440
