Every year, the first Sunday in May is Mother's Day. On this day, all major shopping malls have discount activities. Please help me to calculate. My mother paid 238 yuan for a 30% off dress. The original price of this dress is how many?
每年五月份的第一个周日是母亲节，这天各大商场都进行了打折优惠活动，请你帮助算一算，妈妈买一件打七折的衣服付出了238元，这件衣服原价是多少？
<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">238 / (7/10)</gadget>
<output>340</output>

<result>340</result>