<em>20/13</em>
<em>and as you know it can only go into 20 once. </em>
<em>so you can do this 13/13 and 20/13</em>
<em>that leaves 7 of 20 and 13</em>
<em>wait if this is confusing then,</em>
<em>_______________________________________________</em>
<u><em>20/13 - 13/13 = 7/1</em></u>
<em>_______________________________________________</em>
<em>= 1.53</em>