The school bought a batch of English typewriters and distributed them to each class. If two of the classes are divided into 4 units, and the rest of the classes are divided into 2 units, there will be 4 more units; if one class is divided into 6 units, and the rest of the classes are divided into 4 units, the number will be less than 12 units. How many English typewriters did the school buy?
学校买来一批英文打字机分给各班学习．如果其中两个班每班分到4台，其余班级每班分2台，则多4台；如果有一个班分6台，其余班级每班分4台，则不足12台．这个学校买来的英文打字机共有多少台？
<gadget id="calculator">4 * 2</gadget>
<output>8</output>

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

<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">4 + 4</gadget>
<output>8</output>

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

<gadget id="calculator">12 - 2</gadget>
<output>10</output>

<gadget id="calculator">8 + 10</gadget>
<output>18</output>

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

<gadget id="calculator">9 - 2</gadget>
<output>7</output>

<gadget id="calculator">2 * 7</gadget>
<output>14</output>

<gadget id="calculator">8 + 14 + 4</gadget>
<output>26</output>

<result>26</result>