console.log(Math.round(0.9));
// expected output: 1
console.log(Math.round(5.95), Math.round(5.5), Math.round(5.05));
// expected output: 6 6 5
console.log(Math.round(-5.05), Math.round(-5.5), Math.round(-5.95));
// expected output: -5 -5 -6
Math.round( 20.49); // 20
Math.round( 20.5 ); // 21
Math.round( 42 ); // 42
Math.round(-20.5 ); // -20
Math.round(-20.51); // -21