Simple...
you have: [tex] \frac{7}{8} [/tex] and [tex]4 \frac{3}{8} [/tex]
Now, the first one is easy just divide it...
[tex] \frac{7}{8} =0.875[/tex]
Now....
[tex]4 \frac{3}{8} [/tex] needs to be converted...
Multiply the whole number*denominator...
4*8=32
Now add the numerator....
32+3=35
Now use the original denominator...
[tex] \frac{35}{8} [/tex]
Now divide...
[tex] \frac{35}{8}=4.375
[/tex]
Thus, your answer.