most common technique to convert planetary degree to price is using modulo 360.
360 deg longitude is max longitude of any planet, so if DOW is trading at say for example 20000, by using Mod formula in excel, we find that dow has completed 55 full circles of 360 deg, + 200 deg in 56th circle.
Now if say Saturn is at 240 degree longitude in zodiac, you can calculate Saturn price as (55 * 360) = 19800 + 240 = 20040. So for Planet Saturn @ 240 degree in Zodiac is equal to price of 20040.