A milk box is 8cm long, 7cm wide, and 15cm high. It is necessary to print an advertising pattern around the box. What is the area of the pattern dm**2?
一个牛奶盒长8cm，宽7cm，高15cm，要在盒子四周印上广告图案，印图案的面积是多少dm**2？
<gadget id="calculator">8 * 15</gadget>
<output>120</output>

<gadget id="calculator">7 * 15</gadget>
<output>105</output>

<gadget id="calculator">120 + 105</gadget>
<output>225</output>

<gadget id="calculator">2 / 100</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">225 * (1/50)</gadget>
<output>9/2 = around 4.5</output>

<result>9/2 = around 4.5</result>