No problem, we've got 1315 and 7735 to multiply
1315 × 7735 = 7735 × (1315)
+ 7735 × 5 what gives us 38675
+ 7735 × 10 that is equal 77350
+ 7735 × 300 that is equal 2320500
+ 7735 × 1000 that equals 7735000

= 10171525
