nvas id="interval_7" width=608 height=84></canvas>
	<p class="big">
&times;
	</p>
<canvas id="interval_8" width=608 height=84></canvas>
	<p class="big">
=
	</p>
<canvas id="interval_9" width=608 height=84></canvas>
	<p class="comment">
Not all the intervals are divisible without inversion.
	</p>

	<script language="JavaScript">
	init_slider(7, 0, 10, 3, 4, "%x", function(lb, ub) {
		slider_lb[9] = slider_lb[7] * slider_lb[8];
		slider_ub[9] = slider_ub[7] * slider_ub[8];
		draw_slider(9);
	});
	init_slider(