I like the first anons answer but it was not very helpful.
say you have 56.84987 degrees - this is how i would change it using the site calc.
$$\left({\mathtt{56.849\: \!87}}{\mathtt{\,-\,}}{\mathtt{56}}\right){\mathtt{\,\times\,}}{\mathtt{60}} = {\mathtt{50.992\: \!2}}$$
$$\left({\mathtt{50.992\: \!2}}{\mathtt{\,-\,}}{\mathtt{50}}\right){\mathtt{\,\times\,}}{\mathtt{60}} = {\mathtt{59.532}}$$
so 56.84987 degrees is 56 degrees, 50minutes and 59.532 seconds
I hope that is more helpful than the other answers 