function Converter(arg1, arg2, arg3) {
    let first = Number(arg1);
    let second = String(arg2);
    let third = String(arg3);
    let conversion = second + third;
    if (conversion = 'mm' + 'm') {
        let result = first / 1000;
        console.log (result.toFixed(3));
    } else if (conversion === 'mm' + 'cm') {
        let result = first * 10;
        console.log (result.toFixed(3));
    } else if (conversion === 'cm' + 'm') {
        let result = first / 10;
        console.log (result.toFixed(3));
    } else if (conversion === 'cm' + 'mm') {
        let result = first * 10;
        console.log (result.toFixed(3));
    } else if (conversion === 'm' + 'mm') {
        let result = first * 1000;
        console.log(result.toFixed(3));
    } else if (conversion === 'm' + 'cm') {
        let result = first * 100;
        console.log(result.toFixed(3))
    }

}