Solve this $4$ question with using formula and Exhibit$-1$

$1.$ What is the firm total asset turnover ratio? Do not round your intermediate calculations

$2.$ What is the firm operating margin?

$3.$ What is the difference between firm return on equity and return on asset?

$4.$what is the firm P$/$E ratio?

Exhibit $1$

Balance Sheet $($Millions of $$)$

$\backslash$table$[[$Assets$,2021],[$Cash and securities$,$$$4,500$