Use red paper to make a triangular small flag. It is known that the length of the red paper is 1.2 meters and the width is 0.8 meters. The two right-angled sides of the small red flag are 2 decimeters and 3 decimeters respectively.
用红纸做三角形的小旗，已知红纸长1.2米，宽0.8米，小红旗的两条直角边分别长2分米，3分米，一张红纸可做多少面红旗？
<gadget id="calculator">2 / 100</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">40 * 40 * (1/50)</gadget>
<output>32</output>

<result>32</result>