In Xiao Ming's piggy bank, there are 2 10 yuan, 3 5 yuan, 10 1 yuan, 9 5 cents, 13 2 cents, and 4 1 cents. How many yuan are there in Xiaoming's piggy bank?
小明的储蓄罐里有2个10元，3个5元，10个l元，9个5角，13个2角，4个1角，小明的储蓄罐里共有多少元．
<gadget id="calculator">2 * 10</gadget>
<output>20</output>

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

<gadget id="calculator">10 * 1</gadget>
<output>10</output>

<gadget id="calculator">5 / 10</gadget>
<output>1/2 = around 0.5</output>

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

<gadget id="calculator">2 / 10</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">13 * (1/5) * 1</gadget>
<output>13/5 = around 2.6</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">4 * (1/10) * 1</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">20 + 15 + 10 + (9/2) + (13/5) + (2/5)</gadget>
<output>105/2 = around 52.5</output>

<result>105/2 = around 52.5</result>