The school originally had 321 story books, but bought another 211. Divide these story books equally among 4 classes, how many books will each class get?
学校原有故事书321本，又买来211本．把这些故事书平均分给4个班，每个班分得多少本？
<gadget id="calculator">321 + 211</gadget>
<output>532</output>

<gadget id="calculator">532 / 4</gadget>
<output>133</output>

<result>133</result>