The slide calculator will determine the new sales price of cattle when sold on a slide and are over the contracted weight limit at sale time. Price CWT stands for price per hundred weight. So if you have sold your calves for 1.20 weighing 500 lbs, you would place in the box 120 with no other marks. Be sure when listing the slide per pound you type in full amount. (EX: for a ten cent slide you would simply type 0.10). The base wt is the weight at which you sold your calves for, the pay weight is what your calves will actually be paid on. Remember very rary if any will the slide work if you are underweight.