Metric Converter

package main

import "fmt"

func main() {
    var number float64
    fmt.Scanln(&number)

    var inputMetric, outputMetric string
    fmt.Scanln(&inputMetric)
    fmt.Scanln(&outputMetric)

    if inputMetric == "mm" {
        if outputMetric == "cm" {
            number /= 10
        } else {
            number /= 1000
        }
    } else if inputMetric == "cm" {
        if outputMetric == "m" {
            number /= 100
        } else {
            number *= 10
        }
    } else {
        if outputMetric == "cm" {
            number *= 100
        } else {
            number *= 1000
        }
    }

    fmt.Printf("%.3f", number)
}