Fang Fang rides a bicycle for (3/4) hours and travels (15/2) kilometers. To calculate how many kilometers per hour he travels on average, what is the correct formula?
方方骑自行车(3/4)小时行驶(15/2)千米．要计算他平均每小时行驶多少千米，列式正确的是多少
<gadget id="calculator">15 / 2</gadget>
<output>15/2 = around 7.5</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(15/2) / (3/4)</gadget>
<output>10</output>

<result>10</result>