If you have free time you can try to solve next mathematical puzzle.
Given are four integers: 1, 3, 4, 6
and also four basic operations: multiplication *, division /, addition +, substruction -
Every integer you can use exactly one time, but you can repeat the same operation (it means, not all operations should be used by the solution). It's strongly forbidden to use other mathematical operations (like root, potency, log, etc) or melt integers together, for example 1 (one) and 3 (three) coludn't be melted to 13 (thirteen). All mathematical rules are required (braces are alowed)! You need to get 24 as result.
How about this?$$\dfrac{6}{1-\dfrac 34}$$