In a subtraction equation, the difference is 16. If the minuend remains unchanged, the subtrahend increases 4.7. How much is the difference.
在一个减法算式里，差是16．如果被减数不变，减数增加4.7．差是多少．
<gadget id="calculator">16 - 4.7</gadget>
<output>11.3</output>

<result>11.3</result>