Question 1157796

How many distinguishable permutations can be formed from the letters in the word "sassafras"?? 
Please solve thanks!
<pre>NOTHING to solve here!!! This just needs to be SIMPLIFIED!!
Nine (9) letters, of which there are 4 "ESSES", and 3 "As", so we get: {{{highlight_green(matrix(1,11, 9!/(4! * 3!), "=", (9 * 8 * 7 * 6 * 5 * 4!)/(4! * 3!), "=", (9 * 8 * 7 * 6 * 5 * 4!)/(4! * 3 * 2), "=", (9 * 8 * 7 * cross(6) * 5 * cross(4!))/(cross(4!) * cross(3 * 2)), "=",  9(8)(7)(5), "=", highlight("2,520")))}}}