If a car travels 200 kilometers in 4 hours, if it travels at this speed for another 3 hours, how many kilometers will it travel in total?
一辆汽车4小时行了200千米，照这样的速度再行3小时，一共行多少千米？
<gadget id="calculator">200 / 4</gadget>
<output>50</output>

<gadget id="calculator">4 + 3</gadget>
<output>7</output>

<gadget id="calculator">50 * 7</gadget>
<output>350</output>

<result>350</result>