How do you simplify this expression

Convert 6\frac{3}{8}683 to improper fraction. Use this rule: a \frac{b}{c}=\frac{ac+b}{c}acb=cac+b:
∣86×8+3−2∣+∣−885−1∣

Simplify 6\times 86×8 to 48: 
848+3−2∣+∣−885−1∣

Simplify 48+348+3 to 51:
851−2∣+∣−885−1∣

 Make the denominators the same:
51/8−2×88

Simplify. Denominators are now the same:

51/8−816

Join the denominators: \frac{51-16}{8}851−16

etc.. and your answer will be 14