When Xiaoma calculates division, he regards the divisor 2.1 as 1.2, and the calculated result is 7. What is the correct result of the original question?
小马在计算除法时，把除数2.1看成了1.2，算出的结果是7，原题正确的结果是多少．
<gadget id="calculator">7 / 2.1</gadget>
<output>3.333333</output>

<gadget id="calculator">1.2 * 3.333333</gadget>
<output>4</output>

<result>4</result>