log weighs 60 kg. If its diameter is doubled and its length reduced to 1/2, what is the weight of this log?
一根圆木重60千克，假如它的直径增加1倍，长度减小为原来的(1/2)，这根圆木重量该是多少？
<gadget id="calculator">2 / 2</gadget>
<output>1</output>

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

<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">2 * 60</gadget>
<output>120</output>

<result>120</result>