During the weekend promotion, my mother bought a T-shirt with a discount of 75% of the original price, saving 40 yuan. What is the original price of this T-shirt?
在周末大促销活动中，妈妈买了一件优惠到原价75%的T恤，节省了40元，这件T恤的原价是多少元．
<gadget id="calculator">75 / 100</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">40 / (1/4)</gadget>
<output>160</output>

<result>160</result>