2 pieces of 20 yuan, 3 pieces of 5 yuan and 7 pieces of 1 jiao denomination coins. How much is the total.
2张20元，3张5元和7张1角面额的钱币．一共是多少．
<gadget id="calculator">20 * 2</gadget>
<output>40</output>

<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<gadget id="calculator">0.1 * 7</gadget>
<output>0.7</output>

<gadget id="calculator">40 + 15 + 0.7</gadget>
<output>55.7</output>

<result>55.7</result>