how do you find the weighted-average common shares outstanding; so I can find the earnings per share?

Wahlberg Company Balance Sheets December 31 Assets 2020 2019 Current assets $59.500 $63,100 68,200 117,100 Cash Debt investments (short-term) Accounts receivable Inventory Total current assets Plant assets (net) 49,800 102,100 114,400 124,000 368,800 329,400 598,600 519,300 5967,400 5848,700 $159,200 $144,800 43.800 41.200 186.000 Total assets Liabilities and Stockholders' Equity. Current liabilities Accounts payable Income taxes payable Total current liabilities Bonds payable Total liabilities Stockholders equity Common stock ($5 par) Retained earnings Total stockholders' equity Total liabilities and stockholders' equity 203,000 220,000 200,000 386.000 423.000 299,200 278.300 266.100 163,500 544.400 462.700 $967 400 $843.700 Wahlberg Company Income Statement For the Years Ended December 31 2020 2019 $1,810,600 $1,746,200 1,012,200 984,000 798,400 762,200 479,600 515,200 Net sales Cost of goods sold Gross profit Selling and administrative expenses Income from operations Other expenses and losses Interest expense Income before income taxes Income tax expense 283,200 282.600 17,300 13 800 265,900 269,300 81,100 76,300 Net income $ 184,800 $ 193,000