A car travels the whole way (3/4) from Jinan to Gaomi, and the distance to the midpoint is 75 kilometers. How many kilometers is the distance from Jinan to Gaomi?
一辆汽车从济南到高密，行了全程的(3/4)，此时距离中点75千米．济南到高密相距多少千米．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(3/4) - (1/2)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">75 / (1/4)</gadget>
<output>300</output>

<result>300</result>