A piece of cloth, (1/2) meter is used for the first time, and the remaining (1/4) is used for the second time, leaving 22.5 meters. How many meters was the cloth originally?
一块布，第一次用去(1/2)米，第二次用去余下的(1/4)，还剩22.5米．这块布原来有多少米？
<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">22.5 / (3/4)</gadget>
<output>30</output>

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

<gadget id="calculator">30 + (1/2)</gadget>
<output>61/2 = around 30.5</output>

<result>61/2 = around 30.5</result>