If each of 4 subsidiaries of Corporation R has been granted a line of credit of $464,800 and each of the other 3 subsidiaries of Corporation R has been granted a line of credit of $112,000, what is the average (arithmetic mean) line of credit granted to a subsidiary of Corporation R? Choose the correct option:
A) $1,568,000
B) $448,000
C) $406,000
D) $313,600
E) $116,000
My take is D.   (464800*4 + 112000*3)/7= 
<gadget id="calculator">(464800*4 + 112000*3)/7</gadget>
<output>313_600</output>
313600
<result>D</result>
If each of 4 subsidiaries of Corporation R has been granted a line of credit of $464,800 and each of the other 3 subsidiaries of Corporation R has been granted a line of credit of $112,000, what is the average (arithmetic mean) line of credit granted to a subsidiary of Corporation R?