2 + 3; 3 + 5 / 2; 5 * 7 + 6.23; 5 + 7i; 5E2 + 3e-5-4+2i; 5*3+2i; 5 + [.0, 7]i; [1,3] * [2,4] ; [1,3] / [2,4]; (1+3i) /(2+4i); [7,4] / [5,8] * [5,8] / [7,4]; 5 i+3i*4i; [3+5*7,8*(2-5.00)] / (34+24i);