The teacher bought 6 pens, the price of the pen is three times that of the ballpoint pen, and the price of a ballpoint pen is 2 yuan. How much did the teacher spend on the pen?
老师买来6枝钢笔，钢笔的价钱是圆珠笔的3倍，一枝圆珠笔的价钱是2元．老师买钢笔用了多少元？
<gadget id="calculator">2 * 3 * 2 * 3</gadget>
<output>36</output>

<result>36</result>