Out of number of Saras birds, one fourth the number are moving about in lotus plants $$\dfrac { 1^{ th } }{ 9 } $$ coupled (along) with $$\dfrac { 1^{ th } }{ 4 } $$ as well as 7 times the square root of the number move on a hill; 56 birds remain in vakula trees. What is the total number of birds ?