The Young Pioneers Brigade should make a small red flag with a right-angled triangle whose sides are 3 decimeters and 4 decimeters. A piece of red paper is 1.2 meters long and 0.6 meters wide. If you want to make 120 small red flags, how many pieces of red paper are needed at least?
少先队大队部要做直角边是3分米和4分米的直角三角形小红旗．一张红纸长1.2米，宽0.6米，如果要制作小红旗120面，至少需要红纸多少张？
<gadget id="calculator">4 / 10</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1.2 / (2/5)</gadget>
<output>3</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">0.6 / (3/10)</gadget>
<output>2</output>

<gadget id="calculator">3 * 2 * 2</gadget>
<output>12</output>

<gadget id="calculator">120 / 12</gadget>
<output>10</output>

<result>10</result>