On the "March and Eight" day, my mother passed by a clothing store and saw that all the products in it were on sale at a 20% discount. My mother bought a pair of pants for 160 yuan. How much money did my mother save?
"三，八"节那天，妈妈路过一家服装店，看见里面的商品一律打八折出售，妈妈花160元钱买了一条裤子，妈妈节省了多少元钱？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">160 / (4/5)</gadget>
<output>200</output>

<gadget id="calculator">200 - 160</gadget>
<output>40</output>

<result>40</result>