Find the percentage that 7m is greater than 4m, what is the correct formula
求7m比4m多百分之几，正确列式是多少
<gadget id="calculator">7 - 4</gadget>
<output>3</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<result>3/4 = around 0.75</result>