No problem, we've got 7855 and 3930 to multiply
7855 × 3930 = 3930 × (7855)
+ 3930 × 5 that is equal 19650
+ 3930 × 50 producing 196500
+ 3930 × 800 what gives us 3144000
+ 3930 × 7000 that equals 27510000

= 30870150
