The population of porcupines in a park is 50. The number of female porcupines is 3/5 of the total population. If each female porcupine gives birth to 4 babies every month, how many porcupines will be in the park after a year?
The number of female porcupines in the park is 3/5*50 = 
<gadget id="calculator">3/5*50</gadget>
<output>30</output>
30.
In a month, the 30 female porcupines give birth to 30*4 = 
<gadget id="calculator">30*4</gadget>
<output>120</output>
120 new babies.
After a year, with 12 months, the total number of new porcupines in the park is 120*12 = 
<gadget id="calculator">120*12</gadget>
<output>1_440</output>
1440.
The total population of porcupines in the park after a year is 50+1440 = 
<gadget id="calculator">50+1440</gadget>
<output>1_490</output>
1490.

<result>1_490</result>