Calculation: 1+4+7+10+13+...+97+100=how much.
计算：1+4+7+10+13+…+97+100=多少．
<gadget id="calculator">1 + 100</gadget>
<output>101</output>

<gadget id="calculator">100 - 1</gadget>
<output>99</output>

<gadget id="calculator">100 - 97</gadget>
<output>3</output>

<gadget id="calculator">99 / 3</gadget>
<output>33</output>

<gadget id="calculator">33 + 1</gadget>
<output>34</output>

<gadget id="calculator">34 / 2</gadget>
<output>17</output>

<gadget id="calculator">101 * 17</gadget>
<output>1_717</output>

<result>1_717</result>