Students need to place colored flags around a rectangular playground that is 96 meters long and 36 meters wide. It is required to have one at each of the four corners, and to insert one every 4 meters. How many colored flags are needed in total?
同学们要在长96米，宽36米的长方形操场的四周插彩旗，要求四角各有一面，而且每隔4米插一面，共需多少面彩旗．
<gadget id="calculator">96 + 36</gadget>
<output>132</output>

<gadget id="calculator">2 / 4</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">132 * (1/2)</gadget>
<output>66</output>

<result>66</result>