Is this the answer you are looking for (ready to be plugged in a calculator )?
(37*6 +1) * 45 / 6 / 100

Or, calculating by hand,
37*6 = 222
222 + 1 = 223
So 37 1/6 % = 223/600
and 37 1/6 % of 45 = (223 * 45)/600 = (223 * 15)/200 = 3345 / 200 = 33.45 / 2 = 16.725