The teacher has a number of pictures, half of which is given to Xiao Ming, one is less, and there are 25 pictures left. How many pictures did the teacher have?
老师有若干张画片，送给小明一半少1张，还剩25张，老师原有画片多少张？
<gadget id="calculator">25 - 1</gadget>
<output>24</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">24 / (1/2)</gadget>
<output>48</output>

<result>48</result>