No problem, we've got 3872 and 2971 to multiply
3872 × 2971 = 2971 × (3872)
+ 2971 × 2 that is equal 5942
+ 2971 × 70 what gives us 207970
+ 2971 × 800 what gives us 2376800
+ 2971 × 3000 that is equal 8913000

= 11503712
