The price of each table tennis racket is 35 yuan. Mr. Zhang is going to buy 4 pairs of these rackets. How much money does he need to bring at least?
每只乒乓球拍的价钱是35元，张老师准备买4副这样的球拍，他至少需带多少钱？
<gadget id="calculator">35 * 2 * 4</gadget>
<output>280</output>

<result>280</result>