We also note that the entire statutory scheme is geared toward efficiency. Myers v. Myers, 8 Wn. App. 475, 477-78, 506 P.2d 1336 (1973); In re Estates of Aaberg, 25 Wn. App. 336, 344-45, 607 P.2d 1227 (1980). The sons' writing therefore suffices as a petition for a formal accounting.
The court is free to construe the probate statutes in the manner that in its judgment will "best accord with their purpose and spirit." Myers v. Myers, 8 Wn. App. 475, 477, 506 P.2d 1336 (1973) (quoting In re Estate of Langill, 117 Wn. 268, 270, 201 P. 28 (1921)). This purpose and spirit is best described by RCW 11.96.020: