Iron Words Mystery Cache

This is a "puzzle cache" therefore the listed coordinates do not lead to the actual cache. You must solve the following  puzzle to obtain those coordinates. Good luck!

The cache location it at N 41 13.0AB   W 104 48.3CD

You must complete the following instructions to attain your missing digits. Good luck!

Remove the first vowel from IRONY and convert to its' numerical equivalent, ie A=1, B=2, etc, etc.. This is A.

Remove the letters i,r,o,n, from IRONMONGER. How many letters are remaining? This is B.

Remove the word "iron" from CHIRONOMID and convert each remaining letter to its' numerical equivalent, as above. Next, x = total of first 3 numbers. Then, y = total of last 3 numbers. Therefore: your C=x/y

Remove the word "iron" for IRONWEED and omit the last letter. The remaining word rhymes with your number D.

If you have solved correctly, plotting your solved letters (A, B, C. and D) into the starting cache location above, you will have no problems finding the final cache. 

You can check your answers for this puzzle on GeoChecker.com.