((4+ 7) -3.00)/4; 5; 4 + (25/5); 1 + 1 ; 0 - 1 ; -1 + 2; -23.7+ 99.0; 2*3.0 ; 4 / 3.1; 1.0 + 2 * 3; 3+2*2+1; 3+3+3+3; 3-3-3-3; 3*3*3*3; 3/3/3/3; (1)+(2); ( 1 ) ; ( ((( 1.0) )) )) ; (((((2+1)*2+1)*2+1)*2+1)*2+1)*2+1; .0; (); (((((0)))); 1+; +1; 1+2*3-; 1+-+-1; 2*/*/2; 2(3); (3)2; )+1+(; 1+ (3-2) ;