def readIntArr():
    return [int(x) for x in input().split()]

def extended_gcd(a, b):
    """returns gcd(a, b), s, r s.t. a * s + b * r == gcd(a, b)"""
    s, old_s = 0, 1
    r, old_r = b, a
    while r:
        q = old_r // r
        old_r, r = r, old_r - q * r
        old_s, s = s, old_s - q * s
    return old_r, old_s, (old_r - old_s * a) // b if b else 0

def roundup(x):
    if x == int(x):
        return int(x)
    else:
        y = int(abs(x))
        if x < 0:
            return -y
        else:
            return y + 1

def rounddown(x):
    if x == int(x):
        return int(x)
    else:
        y = int(abs(x))
        if x < 0:
            return -y - 1
        else:
            return y

def solve():
    a, b, c = readIntArr()
    x1, x2 = readIntArr()
    y1, y2 = readIntArr()
    
    c *= -1
    
    if a == 0 and b == 0:
        if c == 0:
            ans = (x2 - x1 + 1) * (y2 - y1 + 1)
        else:
            ans = 0
        print(ans)
        return
    if a == 0:
        if c % b == 0 and y1 <= c // b <= y2:
            ans = 1
        else:
            ans = 0
        print(ans)
        return
    if b == 0:
        if c % a == 0 and x1 <= c // a <= x2:
            ans = 1
        else:
            ans = 0
        print(ans)
    
    g, xg, yg = extended_gcd(a, b)
    
    if c % g != 0:
        ans = 0
        print(ans)
        return

    x0 = xg * (c // g)
    y0 = yg * (c // g)
    
    
    k = roundup((x1 - x0) / (b // g))
    xlow = x0 + k * (b // g)
    k = rounddown((x2 - x0) / (b // g))
    xhigh = x0 + k * (b // g)
    
    if xlow > xhigh:
        ans = 0
        print(ans)
        return
    
    ylow = (c - a * xlow) // b
    yhigh = (c - a * xhigh) // b
    if ylow > yhigh:
        ylow, yhigh = yhigh, ylow
    
    k = roundup((y1 - y0) / (a // g))
    ylow2 = y0 + k * (a // g)
    k = rounddown((y2 - y0) / (a // g))
    yhigh2 = y0 + k * (a // g)
    
    ylow3 = max(ylow, ylow2)
    yhigh3 = min(yhigh, yhigh2)
    
    if ylow3 > yhigh3:
        ans = 0
        print(ans)
        return
    
    ans = 1 + (yhigh3 - ylow3) // abs(a // g)
        
    print(ans)
            
solve()