Two cylindrical steel materials with the same texture, the radius of the base of A is (3/2) of that of B, the length of B is twice that of A, A weighs 72 kg, how much does B weigh?
两根质地相同的圆柱形钢材，甲的底面半径是乙的(3/2)，乙的长度是甲的2倍，甲重72千克，乙重多少千克．
<gadget id="calculator">9 / 8</gadget>
<output>9/8 = around 1.125</output>

<gadget id="calculator">72 / (9/8)</gadget>
<output>64</output>

<result>64</result>