Mr. Li bought 13 footballs and 13 basketballs. The footballs were 58 yuan each, and the basketballs were 42 yuan each. How much did Mr. Li buy the balls?
李老师买了足球和篮球各13个，其中足球每个58元，篮球每个42元，李老师买球一共用了多少钱？
<gadget id="calculator">42 + 58</gadget>
<output>100</output>

<gadget id="calculator">100 * 13</gadget>
<output>1_300</output>

<result>1_300</result>