In a primary school, there were 236 students in the third grade and 255 students in the fourth grade in the first semester. In the next semester, 8 new students were transferred from each grade. How many more students are in the fourth grade than in the third grade?
某小学上学期三年级有236人，四年级有255人，下学期每个年级都转来新同学8人，现在四年级比三年级多多少人？
<gadget id="calculator">255 - 236</gadget>
<output>19</output>

<result>19</result>