Uncle Wang wants to paint his small noodle shop. It is known that the noodle shop is 6.4m long, 5m wide, and 3.2m high. The area after deducting the doors and windows is 8.4m**2. If there is no square meter to paint and it costs 7 yuan to paint, how much does it cost to paint this noodle restaurant?
王叔叔要粉刷自己的小面馆，已知这件面馆的长6.4m，宽5m，高是3.2m，扣除门窗的面积8.4m**2．如果没平方米粉刷需要7元涂料费，那么粉刷这间面馆要多少元？
<gadget id="calculator">6.4 * 5</gadget>
<output>32</output>

<gadget id="calculator">6.4 * 3.2</gadget>
<output>20.48</output>

<gadget id="calculator">5 * 3.2</gadget>
<output>16</output>

<gadget id="calculator">20.48 + 16</gadget>
<output>36.48</output>

<gadget id="calculator">36.48 * 2</gadget>
<output>72.96</output>

<gadget id="calculator">72.96 - 8.4</gadget>
<output>64.56</output>

<gadget id="calculator">32 + 64.56</gadget>
<output>96.56</output>

<gadget id="calculator">96.56 * 7</gadget>
<output>675.92</output>

<result>675.92</result>