#!/usr/bin/env python
# coding: utf-8

# https://bermatematika.net/2016/10/29/perkalian-pecahan-yang-menarik/

# In[1]:


from __future__ import division


# In[2]:


a = range(0, 10)
b = range(0, 10)
c = range(0, 10)
d = range(0, 10)


# In[3]:


print a


# In[4]:


count = 0
for ai in a:
    for bi in b:
        for ci in c:
            for di in d:
                if ai == 0 or bi == 0 or ci == 0 or di == 0:
                    continue;
                else:
                    x = ai*ci
                    y = bi*di
                    res = x/y
                    xx = ai*10 + ci
                    yy = bi*10 + di
                    res2 = xx/yy
                    if res == res2:
                        count += 1
                        print str(count)+'.   (', ai, '/', bi, ') x (', ci, '/', di, ') = ' , res, ' = ', xx, '/', yy


# In[ ]: