There are 20 dolphins in the aqua park. One-fourth of the dolphins are fully trained. Two-third of the remaining dolphins are currently in training and the rest will be trained next month. How many dolphins will be trained next month?
20 x 1/4 = 
<gadget id="calculator">20*1/4</gadget>
<output>5</output>
5 dolphins are fully trained.
So, 20 - 5 = 
<gadget id="calculator">20-5</gadget>
<output>15</output>
15 dolphins are not yet fully trained.
15 x 2/3 = 
<gadget id="calculator">15*2/3</gadget>
<output>10</output>
10 are currently in training.
Therefore, 15 - 10 = 
<gadget id="calculator">15-10</gadget>
<output>5</output>
5 dolphins will be trained next month.

<result>5</result>