There are 15 1-yuan coins, 5 50-cent coins and 12 1-cent coins in Xiaohong’s piggy bank. How many yuan are there in Xiaohong’s piggy bank?
小红的储蓄罐里有15个1元的硬币，5个5角的硬币和12个1分的硬币，小红的储蓄罐里一共有多少元、
<gadget id="calculator">15 * 1</gadget>
<output>15</output>

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

<gadget id="calculator">(1/2) * 5</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">1 / 100</gadget>
<output>1/100 = around 0.01</output>

<gadget id="calculator">(1/100) * 12</gadget>
<output>3/25 = around 0.12</output>

<gadget id="calculator">15 + (5/2) + (3/25)</gadget>
<output>881/50 = around 17.62</output>

<result>881/50 = around 17.62</result>