$\frac{ 15 }{ 2 }\div15 \times 1000$
Dividing is equivalent to multiplying by the reciprocal$\frac{ 15 }{ 2 } \times \frac{ 1 }{ 15 } \times 1000$
Cancel out the greatest common factor $15$$\frac{ 1 }{ 2 } \times 1000$
Cancel out the greatest common factor $2$$500$