amount_to_range = {
    "2,147,483,646": "/1",
    "1,073,741,822": "/2",
    "536,870,910": "/3",
    "268,435,454": "/4",
    "134,217,726": "/5",
    "67,108,862": "/6",
    "33,554,430": "/7",
    "16,777,214": "/8",
    "8,388,606": "/9",
    "4,194,302": "/10",
    "2,097,150": "/11",
    "1,048,574": "/12",
    "524,286": "/13",
    "262,142": "/14",
    "131,070": "/15",
    "65,534": "/16",
    "32,766": "/17",
    "16,382": "/18",
    "8,190": "/19",
    "4,094": "/20",
    "2,046": "/21",
    "1,022": "/22",
    "510": "/23",
    "254": "/24",
    "126": "/25",
    "62": "/26",
    "30": "/27",
    "14": "/28",
    "6": "/29",
    "2": "/30"
}