From point A to point B, first complete a quarter of the journey by bicycle, then complete the remaining half by bus, then complete the remaining two-thirds by MRT, and finally walk 500 km To reach the destination in meters, find the distance between AB and AB in meters.
从A地去B地，先骑自行车完成了全程的四分之一，再搭公交车完成了余下的二分之一，接下来又搭捷运完成了余下的三分之二，最后步行500公尺到达目的地，求AB两地距离多少公尺．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</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>3/8 = around 0.375</output>

<gadget id="calculator">1 - (1/4) - (3/8)</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(3/8) * (2/3)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4) - (3/8) - (1/4)</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">500 / (1/8)</gadget>
<output>4_000</output>

<result>4_000</result>