Substituting Values into Variables of the Formulas

Is there a step or a way in Mathcad 15 wherein the numerical values of variables are reflected in the formula and then displayed in Mathcad? For example, the main formula is a = b*d^2, with b = 4 and d = 5, can I display in Mathcad "a = 4 x 5^2" and then eventually get a = 100. If you have any suggestion on how to make this happen in Mathcad please help me. One of the reviewer of my calculation is requesting this to make sure that the program is spitting out the correct answer or calling out the correct values of the variables. I know it sounds silly but he is the reviewer and I need to abide by his request, so if anyone can help on this I'd really appreciate it. Thanks..

Jay B.