A piece of cloth, 35 meters is used to make clothes, just use this piece of cloth (7/15), how long is this piece of cloth originally?
一块布，做衣服用去35米，正好用去这块布的(7/15)，这块布原来有多长？
<gadget id="calculator">7 / 15</gadget>
<output>7/15 = around 0.466667</output>

<gadget id="calculator">35 / (7/15)</gadget>
<output>75</output>

<result>75</result>