20 children in the small class of kindergarten and 30 children in the big class share biscuits together. The children in the small class each share 10 yuan, and the children in the big class each share 2 yuan more than the average share of the children in the big and small classes. How many biscuits were divided in total?
幼儿园小班的20个小朋友和大班的30个小朋友一起分饼干，小班的小朋友每人分10块，大班的小朋友每人比大、小两个班小朋友平均分的份数多2块．求一共分掉了多少块饼干？
<gadget id="calculator">20 + 30</gadget>
<output>50</output>

<gadget id="calculator">20 * 10</gadget>
<output>200</output>

<gadget id="calculator">30 * 2</gadget>
<output>60</output>

<gadget id="calculator">200 + 60</gadget>
<output>260</output>

<gadget id="calculator">50 - 30</gadget>
<output>20</output>

<gadget id="calculator">260 / 20</gadget>
<output>13</output>

<gadget id="calculator">50 * 13</gadget>
<output>650</output>

<result>650</result>