There are 78 people in a certain unit, standing in a row, counting from left to right, Xiao Wang is the 50th, counting from right to left, Xiao Zhang is the 48th, how many people are there between Xiao Wang and Zhang.
某单位有78个人，站成一排，从左向右数，小王是第50个，从右向左数，小张是第48个，则小王小张之间有多少人．
<gadget id="calculator">48 - 78 - 2</gadget>
<output>-32</output>

<gadget id="calculator">50 + (-32)</gadget>
<output>18</output>

<result>18</result>