Teacher Li took 41 students to go boating in the park, and rented a total of 10 boats, all of which were full. Each big boat takes 6 people, and each small boat takes 4 people. How many boats are rented?
李老师带41名同学去公园划船，共租了10条船，都正好坐满．每条大船坐6人，每条小船坐4人．大船租多少条．
<gadget id="calculator">10 * 6</gadget>
<output>60</output>

<gadget id="calculator">60 - 41 - 1</gadget>
<output>18</output>

<gadget id="calculator">6 - 4</gadget>
<output>2</output>

<gadget id="calculator">18 / 2</gadget>
<output>9</output>

<gadget id="calculator">10 - 9</gadget>
<output>1</output>

<result>1</result>