I am writing an equation in word. I want to write a letter and near it a subscripted letter near it, at a fraction
for example:

2 / Dc

I want to write c as a subscript. When I am in euqtion writing mode, it is not letting me do that. How can i make c as a subscript?

I also tried writing Dc as c subscripted in normal writing and then inserting by pasting in fraction but it didnt work