No ANSWER for this QUESTION till NOW... ANSWER it PLEASE?

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there were 3 men a dog and a pack of biscuits on a picnic... in nite... one men wakes up and opens the box of buiscuit and divides in three parts where one bisucut was being left completely which he gives it to the dog (for example 10 bisuits were there. divided in 3 parts gives 3 quotient +1 remainder... remainder goes to the dog)... and the guy eats his part and go to sleep... the other guy wakes up in nite he divides the box of biscuit in three parts were there was one remaining buisuit again which he gives it to the dog and eats his part and goes do sleep ... same was the case with the other,,, in morning the all three wake up.. open the box of buiscuit and divide it on 3 parts where one biscuit was remaining after dividing which was given to the dog... and then they eat there part of biscuits... now the biscuits have ended up.. and there were zero biscuits left in the box.... HOW MANY BISCUITS WERE THERE IN THE BOX AT THE STARTING?????