Hello,
Let's start by converting the denominator of "1/4" to the same denominator as "7/8".
So, we need to multiply the numerator "1" and the denominator "4" by 2 to get that fraction "1/4" to the same denominator as the other fraction.
After you do that, the fraction 1/4 is now 2/8.
2 goes into 7 3.5 times. So the answer is: There are 3 1/2 doses.
Hope that helped.
May