How much did retained earnings increase over the period? Write out your calculation with your answer.

Table Design Now De Styles Styles Per Wilcoon's Financial Statements for the Year Ended December 31, 2015 Net sales Cost of goods sold Gross profit Operating expenses Operating profit Interest expense Earnings before taxes Income tax expense Net profit $2,870 1.985 $ 885 620 $ 265 40 $ 225 80 $ 145 $25 Assets Current assets Cash Short-term investments Accounts receivable Inventory Total current assets 15 70 150 260 Liabilities and stockholders equity Current liabilities Accounts payable Accrued liabilities Total current liabilities Long-term debt Total liabilities $85 45 130 240 370 Long-term assets Net PPE Goodwill 390 210 Stockholders' equity Common stock and PIC Retained campings Total stockholders equity Total liabilities and equity 80 410 490 $860 Total assets $8.50 Cash from operating activities $150 Investing activities: Capital expenditures Acquisitions $ 60 $ 10 Financing activities Proceeds from long-term borrowing $ So Payments on long-term borrowing S 25 Payments of cash dividends $20 Cash paid for interest Cash paid for income taxes S 10 S75