One quick & dirty solution is to position an <iframe> in your html file to call your program.

<iframe src="path_to_your_program" scrolling="no" width="20"
 height="10" frameborder="0" marginheight="0" marginwidth="0" />
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Then add this to your program to print your variable to the iframe.

print "content-type: text/html\n\n";
print $variable;
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