A pile of sand is more than 3 tons, half of which is removed for the first time, and the remaining half is less than 2 tons for the second time, leaving 23 tons. How many tons is this pile of sand?
一堆沙第一次运走它的一半多3吨，第二次运走剩下的一半少2吨，还剩23吨，这堆沙原来多少吨？
<gadget id="calculator">23 - 2</gadget>
<output>21</output>

<gadget id="calculator">21 * 2</gadget>
<output>42</output>

<gadget id="calculator">42 + 3</gadget>
<output>45</output>

<gadget id="calculator">45 * 2</gadget>
<output>90</output>

<result>90</result>