Simple fractions in the Microsoft Office Word formula editor. How to force the editor not to reduce the font size in fractions?

Question

Microsoft Office

Good time.
I ask for help in solving the following problem: while working with the built-in formula editor in MS Office Word of the latest versions 2007-10-13, when inserting simple fractions that are located inside a text line, the font size of the numerator and denominator of the fraction "as if" decreases. The set font size has not changed, but the editor automatically compresses the formula.
The question is: is there a way to force the editor not to compress simple fractions.
PS
1. When the fraction is placed separately on the line, the font does not decrease, but it is necessary to make the fraction exactly inside the text line
2. Increasing the font size for each fraction in order to visually align the size of the characters is a bad option.
3. It is necessary to work in Word. LaTEX, etc., unfortunately, cannot be considered.