Just type the following equation in Google , hit google search and see what result you get
399999999999997-399999999999996
399999999999997-399999999999996
sw7x said:mehemai oya cal eka ochchara ilakkam ganakta support jkaranne na
oya sankaya dekatama madata namaya gane danna etakotath uththare mekamai
39999999999997-39999999999996=1
399999999999997-399999999999996=0
3999999999999997-3999999999999996=0
39999999999999997-39999999999999996=0
i c.... ehemada??