No problem, we've got 1535 and 7977 to multiply
1535 × 7977 = 7977 × (1535)
+ 7977 × 5 giving us 39885
+ 7977 × 30 what gives us 239310
+ 7977 × 500 that equals 3988500
+ 7977 × 1000 giving us 7977000

= 12244695
