set {_f} to 1
    set {_n} to level of fortune of player's tool                                      set {_c} to (1/({_n}+2))
    loop {_n} times:                                                                       add 1 to {_a}
        chance of {_c}:
            add {_a} to {_f}
    drop {_f} of iron ingot

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