Write a level of consecutive positive integers starting with 1 on the blackboard, and erase one of the numbers, then the average of the remaining numbers is 47 (17/31). Ask: What is the number that was erased.
将一级以1开头的连续的正整数写在黑板上，擦去其中的一个数，则余下数的平均数为47(17/31)，问：擦去的那个数是多少．
<gadget id="calculator">1 + 94</gadget>
<output>95</output>

<gadget id="calculator">94 / 2</gadget>
<output>47</output>

<gadget id="calculator">95 * 47</gadget>
<output>4_465</output>

<gadget id="calculator">47 * 93</gadget>
<output>4_371</output>

<gadget id="calculator">17 * 3</gadget>
<output>51</output>

<gadget id="calculator">4_371 + 51</gadget>
<output>4_422</output>

<gadget id="calculator">4_465 - 4_422</gadget>
<output>43</output>

<result>43</result>