width=200>1
applcation
width=200 +
width=200>4
width=200 5
,td width=100>< input type="button" value="5" onClick="document.calculator.ans.value+='5'"style
width=200 -
width=200>7
width=200 8
width=200 9
width=200 /
width=200>1
width=200 2
width=200 3
width=200 +