$\text{a)}45\sout{0}:5\sout{0}=45:5=9$

$\text{b)}24\sout{0}:6\sout{0}=24:6=4$

$\text{c)}50\sout{0}:2\sout{0}=50:2=25$

$\text{d)}5\sout{0}\sout{0}:1\sout{0}\sout{0}=5:1=5$

$\text{e)}60\sout{0}\sout{0}:2\sout{0}\sout{0}=60:2=30$

$\text{f)}540\sout{0}\sout{0}:6\sout{0}\sout{0}=540:6=90$

$\text{g)}14\sout{0}\sout{0}\sout{0}:2\sout{0}\sout{0}\sout{0}=14:2=7$

$\text{h)}270\sout{0}\sout{0}\sout{0}:3\sout{0}\sout{0}\sout{0}=270:3=90$