The area of a right triangle is 30 square centimeters, and one of its right-angled sides is 5 centimeters, how long is the other right-angled side?
一个直角三角形的面积为30平方厘米，它的一条直角边为5厘米，求另一条直角边多长？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">30 * (2/5)</gadget>
<output>12</output>

<result>12</result>