The number of red flowers is 5 times that of yellow flowers, and the number of red flowers is 40 more than that of yellow flowers. How many red flowers are there?
红花的朵数是黄花的5倍，红花比黄花多40朵，红花有多少朵．
<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">40 / 4</gadget>
<output>10</output>

<gadget id="calculator">40 + 10</gadget>
<output>50</output>

<result>50</result>