A certain number is enlarged by 4 times, 10 is added, 6 is subtracted, and 4 is obtained after dividing by 5. What is this number?
某数扩大4倍，再加上10，减去6，除以5后得4，这个数是多少？
<gadget id="calculator">4 * 5</gadget>
<output>20</output>

<gadget id="calculator">6 - 10</gadget>
<output>-4</output>

<gadget id="calculator">20 + (-4)</gadget>
<output>16</output>

<gadget id="calculator">16 / 4</gadget>
<output>4</output>

<result>4</result>