Given values of a, P, K for Charon, find mass of Plute

[daled]

Given:

. . .a_Charon = 19,640 km

. . .P_Charon = 6.387217

. . .K = 1.325 × 10^-14 M day²/km³

(Note: To the right of the M is a little circle with a plus sign in it.)

Calculate the mass of Pluto, which Charon orbits around, using the formula:

. . .M = Ka³ / P²

Does anyone have a clue how to do this problem?
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Edited by stapel -- Reason for edit: formatting

 

[Denis]

Please post PROPERLY...else no one can help.

If you're having "to the power" problems:
a to the power 3 = a^3