Calculation: 1.8+2.5+3.2+3.9+...+71.1.
计算：1.8+2.5+3.2+3.9+…+71.1．
<gadget id="calculator">1.8 + 71.1</gadget>
<output>72.9</output>

<gadget id="calculator">71.1 - 1.8</gadget>
<output>69.3</output>

<gadget id="calculator">2.5 - 1.8</gadget>
<output>0.7</output>

<gadget id="calculator">69.3 / 0.7</gadget>
<output>99</output>

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

<gadget id="calculator">100 / 2</gadget>
<output>50</output>

<gadget id="calculator">72.9 * 50</gadget>
<output>3_645</output>

<result>3_645</result>