In the array (1, 1, 1, 2, 3, 4, 3, 5, 9)..., what is the sum of the three numbers in the 40th group.
在数组(1，1，1,2，3，4,3，5，9)…中，第40组的三个数的和是多少．
<gadget id="calculator">40 * 2</gadget>
<output>80</output>

<gadget id="calculator">80 - 1</gadget>
<output>79</output>

<gadget id="calculator">40 * 40</gadget>
<output>1_600</output>

<gadget id="calculator">40 + 79 + 1_600</gadget>
<output>1_719</output>

<result>1_719</result>