Teacher Zhang bought 3 boxes of pencils, 12 in each box. Now put these pencils in 9 pencil bags, how many pencils can each bag hold on average?
张老师买了3盒铅笔，每盒12支．现在要把这些铅笔装在9个笔袋里，平均每袋可以装几支铅笔？
<gadget id="calculator">3 / 9</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">12 * (1/3)</gadget>
<output>4</output>

<result>4</result>