Suppose M and N are natural numbers and satisfy ((M)/11)+((N)/5)=(27/55), then M+N=how much.
设M、N为自然数，并且满足((M)/11)+((N)/5)=(27/55)，那么M+N=多少．
<gadget id="calculator">1 + 2</gadget>
<output>3</output>

<result>3</result>