A car (3/4) travels 45 kilometers in an hour. According to this calculation, how many kilometers will it travel in 2 hours?
一辆汽车(3/4)小时行了45千米，照这样计算，2小时行多少千米．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">45 / (3/4)</gadget>
<output>60</output>

<gadget id="calculator">60 * 2</gadget>
<output>120</output>

<result>120</result>