No problem, we've got 3145 and 8215 to multiply
3145 × 8215 = 8215 × (3145)
+ 8215 × 5 what gives us 41075
+ 8215 × 40 what gives us 328600
+ 8215 × 100 that equals 821500
+ 8215 × 3000 which equals 24645000

= 25836175
