Fill a large box and 8 small boxes with balls, exactly 100 balls. Each large box is 10 more than the small box, how many pieces are each small box.
在一个大盒和8个小盒里装满球，正好是100个．每个大盒比小盒多装10个，每个小盒装多少个．
<gadget id="calculator">100 - 10</gadget>
<output>90</output>

<gadget id="calculator">1 + 8</gadget>
<output>9</output>

<gadget id="calculator">90 / 9</gadget>
<output>10</output>

<result>10</result>