Teacher Wang is decorating a new house. The living room uses 50 tiles with a side length of (4/5) meters, and the bedroom uses 100 tiles with a side length of (3/5) meters. How many square meters are the living room and bedroom in Mr. Wang's house?
王老师装修新房，客厅用了边长(4/5)米的瓷砖50块，卧室用了边长(3/5)米的瓷砖100块．王老师家的客厅和卧室一共多少平方米．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(4/5) * (4/5) * 50</gadget>
<output>32</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(3/5) * (3/5) * 100</gadget>
<output>36</output>

<gadget id="calculator">32 + 36</gadget>
<output>68</output>

<result>68</result>