There are some pastures on the pasture, which grow at a constant speed. It can feed 24 horses in 6 weeks, or feed 18 horses in 10 weeks. So how much grass does this meadow grow each week?
牧场上有一些牧草，匀速生长．可供24匹马6周吃完，或者供18匹马10周吃完．那么这片草地每周生长多少草？
<gadget id="calculator">18 * 10</gadget>
<output>180</output>

<gadget id="calculator">24 * 6</gadget>
<output>144</output>

<gadget id="calculator">180 - 144</gadget>
<output>36</output>

<gadget id="calculator">10 - 6</gadget>
<output>4</output>

<gadget id="calculator">36 / 4</gadget>
<output>9</output>

<result>9</result>