3/5*2/2=6/10=0,6
1/4*25/25=25/100=0,25
13/20* 5/5=65/100=0,65
3/25*4/4=12/100=0,12
19/40 *25/25=475/1000 =0,475
103/125*8/8=824/1000=0,824
7/250=28/1000=0,028
492/500*2/2=984/1000=0,984
83/400*25/25=2075/10000=0,2075
1231/2500* 4/4=4924/10000 = 0,4924