//argument0 = x1

//argument1 = y1

//argument2 = x2

//argument3 = y2



//With irreductible fraction (not 100%)



//example :



//Quantity |x1|x2|...|

//Time	 |y1|y2|...|



var rate xx yy;



xx = argument2-argument0;

yy = argument3-argument1;



while (xx mod 2)=0 && (yy mod 2)=0

{

xx = xx/2;

yy = yy/2;

}

while (xx mod 3)=0 && (yy mod 3)=0

{

xx = xx/3;

yy = yy/3;

}

while (xx mod 4)=0 && (yy mod 4)=0

{

xx = xx/4;

yy = yy/4;

}

while (xx mod 5)=0 && (yy mod 5)=0

{

xx = xx/5;

yy = yy/5;

}

while (xx mod 6)=0 && (yy mod 6)=0

{

xx = xx/6;

yy = yy/6;

}

while (xx mod 7)=0 && (yy mod 7)=0

{

xx = xx/7;

yy = yy/7;

}

while (xx mod 8)=0 && (yy mod 8)=0

{

xx = xx/8;

yy = yy/8;

}

while (xx mod 9)=0 && (yy mod 9)=0

{

xx = xx/9;

yy = yy/9;

}



rate = string(xx)+"/"+string(yy);



return rate