number of diamonds.
7 robbers robbed a house and took away somepieces of diamonds. They stopped by a hotel for rest. While sleeping, two of the robbers woke up and decided to divide the diamons only between them and run away. While doing dat, one diamond was left so they woke the third one and started dividing but still one diamond was left. Thus they kept on waking another member and tried dividing evenlly among but every time one diamond was left. Finally they woke the seventh robber and the diamond got equally distributed. Find the number of diamonds* they robbed. * the total number of diamonds is <500.