Use a rectangular red cloth with a length of 30 decimeters and a width of 12 decimeters to make a right-angled triangle flag. The two right-angled sides of the flag are 2 decimeters. How many small flags can be made from this rectangular cloth?
用一块长30分米，宽12分米的长方形红布做直角三角形小旗，小旗两条直角边都是2分米，这块长方形布一共能做多少面小旗？
<gadget id="calculator">30 * 12</gadget>
<output>360</output>

<gadget id="calculator">2 / 2</gadget>
<output>1</output>

<gadget id="calculator">2 * 1</gadget>
<output>2</output>

<gadget id="calculator">360 / 2</gadget>
<output>180</output>

<result>180</result>