During the celebration of Teacher's Day, the school will give each of the 180 teachers a piece of clothing. The original price is 100 yuan each, and it will be sold at a 15% discount. How much will the school spend on buying clothes for the teachers?
教师节庆祝活动中，学校要给全校180名教师每人一件衣服，原价每件100元，按八五折出售，学校给教师买衣服一共要用多少元？
<gadget id="calculator">85 / 100</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">100 * (17/20) * 180</gadget>
<output>15_300</output>

<result>15_300</result>