What is the difference between the smallest and largest amount of Grant Date Fair Value of Stock and Option Awards?
{"Mr. Dorsey": {"Grant Date": "\u2014", "Number of Securities Underlying Restricted Stock Awards and Restricted Stock Units (#)": "\u2014", "Number of Securities Underlying Options (#)": "\u2014", "Exercise or Base Price of Option Awards ($/Sh)": "\u2014", "Grant Date Fair Value of Stock and Option Awards ($) (1)": "\u2014"}, "Ms. Friar": {"Grant Date": 4.0, "Number of Securities Underlying Restricted Stock Awards and Restricted Stock Units (#)": 38159.0, "Number of Securities Underlying Options (#)": 109026.0, "Exercise or Base Price of Option Awards ($/Sh)": 44.75, "Grant Date Fair Value of Stock and Option Awards ($) (1)": 3479299.0}, "Ms.Henry": {"Grant Date": 4.0, "Number of Securities Underlying Restricted Stock Awards and Restricted Stock Units (#)": 38159.0, "Number of Securities Underlying Options (#)": 109026.0, "Exercise or Base Price of Option Awards ($/Sh)": 44.75, "Grant Date Fair Value of Stock and Option Awards ($) (1)": 3479299.0}, "Ms. Reses": {"Grant Date": 4.0, "Number of Securities Underlying Restricted Stock Awards and Restricted Stock Units (#)": 38159.0, "Number of Securities Underlying Options (#)": 109026.0, "Exercise or Base Price of Option Awards ($/Sh)": 44.75, "Grant Date Fair Value of Stock and Option Awards ($) (1)": 3479299.0}, "Ms. Whiteley": {"Grant Date": 4.0, "Number of Securities Underlying Restricted Stock Awards and Restricted Stock Units (#)": 16695.0, "Number of Securities Underlying Options (#)": 47699.0, "Exercise or Base Price of Option Awards ($/Sh)": 44.75, "Grant Date Fair Value of Stock and Option Awards ($) (1)": 1522215.0}, "Mr. Daswani": {"Grant Date": 4, "Number of Securities Underlying Restricted Stock Awards and Restricted Stock Units (#)": 4198, "Number of Securities Underlying Options (#)": "\u2014", "Exercise or Base Price of Option Awards ($/Sh)": "\u2014", "Grant Date Fair Value of Stock and Option Awards ($) (1)": 187861}, "Mr. Murphy": {"Grant Date": 4, "Number of Securities Underlying Restricted Stock Awards and Restricted Stock Units (#)": 4962, "Number of Securities Underlying Options (#)": "\u2014", "Exercise or Base Price of Option Awards ($/Sh)": "\u2014", "Grant Date Fair Value of Stock and Option Awards ($) (1)": 222050}}
smallest_grant = min(df["Ms. Friar"]["Grant Date Fair Value of Stock and Option Awards ($) (1)"], df["Mr. Daswani"]["Grant Date Fair Value of Stock and Option Awards ($) (1)"])
largest_grant = max(df["Ms. Friar"]["Grant Date Fair Value of Stock and Option Awards ($) (1)"], df["Mr. Daswani"]["Grant Date Fair Value of Stock and Option Awards ($) (1)"])
answer = largest_grant - smallest_grant