There are 25 black goldfishes in the fish pond of the school, and the number of red goldfishes is twice that of the black goldfishes. The number of flower goldfishes is 8 less than the total number of black goldfish and red goldfish. How many flower goldfishes are there?
学校鱼池里养了25条黑金鱼，养的红金鱼条数是黑金鱼的2倍，养的花金鱼比黑金鱼和红金鱼总数少8条，养花金鱼多少条？
<gadget id="calculator">25 * 2</gadget>
<output>50</output>

<gadget id="calculator">50 - 8</gadget>
<output>42</output>

<gadget id="calculator">25 + 42</gadget>
<output>67</output>

<result>67</result>