In a subtraction formula, the sum of the minuend, the subtrahend and the difference is 200. If the difference is 25, what is the subtrahend?
在一个减法算式中，被减数、减数与差相加的和是200，如果差是25，减数是多少．
<gadget id="calculator">200 / 2</gadget>
<output>100</output>

<gadget id="calculator">100 - 25</gadget>
<output>75</output>

<result>75</result>