The price of each volleyball in the sporting goods store is 28 yuan, and the price of each basketball is 52 yuan. Teacher Li bought 2 volleyballs and several basketballs for the school today, and spent 212 yuan. How many basketballs did Mr. Li buy?
体育用品店每个排球售价28元，每个篮球售价52元．李老师今天为学校买了2个排球和几个篮球，用了212元钱．李老师买了几个篮球？
<gadget id="calculator">28 * 2</gadget>
<output>56</output>

<gadget id="calculator">212 - 56</gadget>
<output>156</output>

<gadget id="calculator">156 / 52</gadget>
<output>3</output>

<result>3</result>