Some help with a3 would be appreciated. Thanks.

Exercise 12-6 (Part Level Submission) Sheridan Company, organized in 2016, has set up a single account for all intangible assets. The following summary discloses the debit entries that have been recorded during 2017 1/2/17 4/1/17 7/1/17 8/1/17 9/1/17 Purchased patent (8-year life) Purchase goodwill (indefinite life) Purchased franchise with 10-year life; expiration date 7/1/27 Payment of copyright (5-year life) Research and development costs $403,200 345,800 474,000 132,000 249,000 $1,604,000 (a1) Your answer is correct. Prepare the necessary entry to clear the Intangible Assets account and to set up separate accounts for distinct types of intangibles. (Credit account titles are automatically indented when amount is entered. Do not indent manually. If no entry is required, select "No Entry" for the account titles and enter o for the amounts.) Account Titles and Explanation Debit Credit TPatents 03200 Goodwill 345800 Franchises J00 Copyrights Research and Development Expense Intangible Assets 1604000 (a2) Your answer is correct. Make the entry as of December 31, 2017, recording any necessary amortization. (Credit account titles are automatically indented when amount is entered. Do not indent manually. If no entry is required, select "No Entry" for the account titles and enter o for the amounts.) Account Titles and Explanation Debit Credit Tamortization Expense 85100 Patents T 50400 | Franchises T 23700 Copyrights 11000 Use straight-line amortization Patents Research and development costs Franchises Copyrights Goodwill