What is the correct format for calling the function and using $1$ and $2$ as arguments?

function multiplyNums$($a$,$ b$)\{$

return a $*$ b;

$\}$

a$.$

multiplyNums$(1)$;multiplyNums$(2)$;

b$.$

function multiplyNums$(1,2)$;

c$.$

call multiplyNums$(1,2)$;

d$.$

multiplyNums$(1,2)$;