It’s my birthday ! I really need help :( it will be my birthday wish:) 1 - 12 please !

we know that
To divide two fractions, they multiply "in cross". This is: the numerator of the first fraction by the denominator of the second fraction, thus we get the numerator. To obtain the denominator, we have to multiply the denominator of the first fraction by the numerator of the second fraction 
Division of an integer by a fraction or vice versa The unit is put as denominator to the whole and divided as a fraction

we  have that

1) 6/(1/2)=6*2/1=12/1=12
2)4/(1/4)=4*4/1=16/1=16
3)5/(1/3)=5*3/1=15/1=15
4)(1/2)/6=1/(6*2)=1/12
5)(1/5)/2=1/(5*2)=1/10
6)(1/8)/3=1/(8*3)=1/24
7)(1/7)/8=1/(7*8)=1/56
8)5/(1/5)=5*5/1=25/1=25
9)(1/3)/9=1/(3*9)=1/27
10)(1/4)/8=1/(4*8)=1/32
11)6/(1/7)=6*7/1=42/1=42
12)(1/6)/5=1/(6*5)=1/30