E $18-13$ Treasury stock; weighted$-$average and FIFO cost $$ LO$18-5$

At December $31,2023,$ the balance sheet of Meca International included the following shareholders' equity accounts:

$\backslash$table$[[$Shareholders$\text{'}$ Equlty,$($$ In millions$)],[$Common stock, $60$ million shares at $$1$ par,$$60$