Question 318457
Draw a line with two points on it.
Label them 9 and 10. 
By eye, split the interval in half and then in half again and plave a light line there. 
Place a point at the 1st eyeball line, which would be 9.25, and label it 9.3.
{{{drawing(300,100,-10,10,-2,2,circle(-5,0,0.3),circle(5,0,0.3),line(-5,0,5,0),line(0,-0.2,0,0.2),line(-2.5,-0.2,-2.5,0.2),line(2.5,-0.2,2.5,0.2),locate(-5,1,9),locate(5,1,10),locate(-2.5,1,9.3),circle(-2.5,0,0.3),circle(-2.5,0,0.2),circle(-2.5,0,0.1))}}}
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Let {{{r=1.232323}}}
{{{100r=123.232323}}}
{{{100r-r=122}}}
{{{99r=122}}}
{{{highlight(r=122/99)}}}
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Let {{{s=1.344444}}}
{{{10r=13.44444}}}
{{{10r-r=13.44444-1.34444}}}
{{{9r=12.1}}}
{{{r=12.1/9}}}
{{{highlight(r=121/90)}}}