A cylindrical granary with a base diameter of 3 meters measured from the inside contains wheat 2.5 meters high. If each cubic meter of wheat weighs 0.7 tons, how many tons of wheat does this granary contain?
一个圆柱形的粮仓，从里面量得底面直径是3米，装有2.5米高的小麦．如果每立方米小麦重0.7吨，这个粮仓装有多少吨的小麦？
<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(3/2) ** 2</gadget>
<output>9/4 = around 2.25</output>

<gadget id="calculator">3.14 * (9/4) * 2.5</gadget>
<output>17.6625</output>

<gadget id="calculator">0.7 * 17.6625</gadget>
<output>12.36375</output>

<result>12.36375</result>