here's how

10 LETTERS · STARTS WITH H

here's how is a valid 10-letter word worth 17 points in Scrabble and 15 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

H4E1R1E1'0S1H4O1W4

4 + 1 + 1 + 1 + 0 + 1 + 0 + 4 + 1 + 4 =17 PTS

DOUBLE WORD → 34TRIPLE WORD → 51

MEANING

What does here's how mean?