A casino table pays 3:2 if you get a blackjack with your first 2 cards. If you scored a blackjack and were paid $60, what was your original bet?
The payout for blackjack is 3:2 or 3/2=1.5 times my bet.
If my original bet was X then I won 1.5*X my bet.
Given that I was paid $60 we know $60 = 1.5X.
X=$60/1.5.
X=$
<gadget id="calculator">40</gadget>
<output>40</output>
40 was my original bet.

<result>40</result>