Take a car from place A to place B for a meeting. If you travel 50 kilometers per hour, you will arrive 0.5 hours late. If you travel 75 kilometers per hour, you can arrive 1 hour earlier. How many kilometers is the distance from place A to place B?
乘车从甲地到乙地开会，若每时行50千米，将迟到0.5小时，若每时行75千米，则可提前1小时到达，甲地到乙地的路程是多少千米？
<gadget id="calculator">50 * 0.5</gadget>
<output>25</output>

<gadget id="calculator">75 * 1</gadget>
<output>75</output>

<gadget id="calculator">25 + 75</gadget>
<output>100</output>

<gadget id="calculator">75 - 50</gadget>
<output>25</output>

<gadget id="calculator">100 / 25</gadget>
<output>4</output>

<gadget id="calculator">4 + 0.5</gadget>
<output>4.5</output>

<gadget id="calculator">50 * 4.5</gadget>
<output>225</output>

<result>225</result>