John plays a game for 4 hours a day every day for 2 weeks.  After all that time, he is only 40% done.  He increased his playtime to 7 hours a day.  How long until he finishes the game?
There are 7*2=
<gadget id="calculator">7*2</gadget>
<output>14</output>
14 days in two weeks.
So he played 14*4=
<gadget id="calculator">14*4</gadget>
<output>56</output>
56 hours.
That means the total length of the game is 56/.4=
<gadget id="calculator">56/.4</gadget>
<output>140</output>
140 hours.
So he has 140-56=
<gadget id="calculator">140-56</gadget>
<output>84</output>
84 hours to beat the game.
So it will take him 84/7=
<gadget id="calculator">84/7</gadget>
<output>12</output>
12 days to beat the game.

<result>12</result>