**Complete each equation.**
| | | | |
:-: | :-: | :-: | :-: | :-: | :-: | :-:
$45$ | $=$ | [[☃ input-number 1]] | $\times$ |$9$
$5$ | $=$ | $45$ | [[☃ dropdown 1]] | $9$
$9$ | [[☃ dropdown 2]] | $5$ | $=$ | $45$
[[☃ input-number 4]] | $=$ | $45$ | $\div$ | $5$