In 1, 4, 7, 10, 13, ..., 100, what is the sum after adding a decimal point in front of each number?
在1，4，7，10，13，…，100中，每个数的前面加上一个小数点以后的总和等于多少．
<gadget id="calculator">10 + 97</gadget>
<output>107</output>

<gadget id="calculator">30 / 2</gadget>
<output>15</output>

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

<gadget id="calculator">107 * 15 * (1/100)</gadget>
<output>321/20 = around 16.05</output>

<gadget id="calculator">1.2 + (321/20) + 0.1</gadget>
<output>17.35</output>

<result>17.35</result>