How many accounts hold 1000 or lesser number of shares?
{"1 - 100": {"Holding": 18402438.0, "Percentage to capital": 0.5, "Number of accounts": 528148.0, "Percentage to total accounts": 70.3}, "101 - 500": {"Holding": 37550103.0, "Percentage to capital": 1.0, "Number of accounts": 185200.0, "Percentage to total accounts": 24.6}, "501 - 1000": {"Holding": 14900327.0, "Percentage to capital": 0.4, "Number of accounts": 20749.0, "Percentage to total accounts": 2.8}, "1001 - 5000": {"Holding": 27199737.0, "Percentage to capital": 0.7, "Number of accounts": 13897.0, "Percentage to total accounts": 1.9}, "5001 - 10000": {"Holding": 9150929.0, "Percentage to capital": 0.2, "Number of accounts": 1292.0, "Percentage to total accounts": 0.2}, "10001 - 20000": {"Holding": 8811580.0, "Percentage to capital": 0.2, "Number of accounts": 622.0, "Percentage to total accounts": 0.1}, "20001 - 30000": {"Holding": 5636878, "Percentage to capital": 0.2, "Number of accounts": 230, "Percentage to total accounts": "-"}, "30001 - 40000": {"Holding": 5424479, "Percentage to capital": 0.1, "Number of accounts": 154, "Percentage to total accounts": "-"}, "40001- 50000": {"Holding": 4808196, "Percentage to capital": 0.1, "Number of accounts": 106, "Percentage to total accounts": "-"}, "50001 -100000": {"Holding": 21790964, "Percentage to capital": 0.6, "Number of accounts": 304, "Percentage to total accounts": "-"}, "100001 - above": {"Holding": 3598709075.0, "Percentage to capital": 96.0, "Number of accounts": 903.0, "Percentage to total accounts": 0.1}, "GRAND TOTAL": {"Holding": 3752384706.0, "Percentage to capital": 100.0, "Number of accounts": 751605.0, "Percentage to total accounts": 100.0}}
accounts_1000_lesser = df["1 - 100"]["Number of accounts"] + df["101 - 500"]["Number of accounts"] + df["501 - 1000"]["Number of accounts"]
answer = accounts_1000_lesser