When the school organized an expedition, the teachers and students of the whole school happened to be filled with 9 cars and 25 vans, with 5 people in each car and 7 people in each van. After arriving at the destination, divide into groups, each group has 1 captain and 10 team members, just after the division, how many teams were divided in total?
讯起学校组织去探险，全校师生刚好坐满了9辆小汽车和25辆面包车，每辆小汽车坐5人，每辆面包车坐7人．到目的地后分小组，每个小组1个队长和10个组员，刚好分完，一共分了几个小队？
<gadget id="calculator">9 * 5</gadget>
<output>45</output>

<gadget id="calculator">25 * 7</gadget>
<output>175</output>

<gadget id="calculator">45 + 175</gadget>
<output>220</output>

<gadget id="calculator">1 + 10</gadget>
<output>11</output>

<gadget id="calculator">220 / 11</gadget>
<output>20</output>

<result>20</result>