power = (number, pow) => {
    let arr = [];
    let length = Math.ceil(pow * Math.log(2) / Math.log(10));
    arr[length-1] = 1;
    for(let i = 0; i < pow; i++)
    {
        for(let j = 0; j < length; j++)
        {
            if(arr[j] != null)
            {
                arr[j] *= number;
                if(arr[j] > 9)
                {
                    temp = arr[j];
                    arr[j] = temp % 10;
                    if(arr[j-1] == null) arr[j-1] = 0;
                    arr[j-1] += Math.floor(temp / 10);
                }
            }
        }
    }
    let answer = "";
    for(let i = 0; i < arr.length; i++)
        if(arr[i] != null) answer += arr[i];
    console.log(answer);
}