Xiao Ke washed a plate of strawberries. Her family ate half of the plate and there were 12 more strawberries. At this time, there were 13 strawberries left on the plate. How many strawberries were there in this plate? (column equation solution)
小珂洗了一盘草莓，她们全家吃了这盘草莓的一半还多12个，这时盘子里还剩13个，这盘草莓原来有多少个？(列方程解答)
<gadget id="calculator">12 + 13</gadget>
<output>25</output>

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

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

<gadget id="calculator">25 / (1/2)</gadget>
<output>50</output>

<result>50</result>