A friend of mine runs a pharmacy.   He has a specialized function in his Dispensary application which receives a decimal value of currency and replaces it to a standard value.   This value is regulated by a government department.



Task

Given a floating point value between   0.00   and   1.00,   rescale according to the following table:

>=  0.00  <  0.06  :=  0.10
>=  0.06  <  0.11  :=  0.18
>=  0.11  <  0.16  :=  0.26
>=  0.16  <  0.21  :=  0.32
>=  0.21  <  0.26  :=  0.38
>=  0.26  <  0.31  :=  0.44
>=  0.31  <  0.36  :=  0.50
>=  0.36  <  0.41  :=  0.54
>=  0.41  <  0.46  :=  0.58
>=  0.46  <  0.51  :=  0.62
>=  0.51  <  0.56  :=  0.66
>=  0.56  <  0.61  :=  0.70
>=  0.61  <  0.66  :=  0.74
>=  0.66  <  0.71  :=  0.78
>=  0.71  <  0.76  :=  0.82
>=  0.76  <  0.81  :=  0.86
>=  0.81  <  0.86  :=  0.90
>=  0.86  <  0.91  :=  0.94
>=  0.91  <  0.96  :=  0.98
>=  0.96  <  1.01  :=  1.00



sub price-fraction ($n where 0..1) {
    when $n < 0.06 { 0.10 }
    when $n < 0.11 { 0.18 }
    when $n < 0.16 { 0.26 }
    when $n < 0.21 { 0.32 }
    when $n < 0.26 { 0.38 }
    when $n < 0.31 { 0.44 }
    when $n < 0.36 { 0.50 }
    when $n < 0.41 { 0.54 }
    when $n < 0.46 { 0.58 }
    when $n < 0.51 { 0.62 }
    when $n < 0.56 { 0.66 }
    when $n < 0.61 { 0.70 }
    when $n < 0.66 { 0.74 }
    when $n < 0.71 { 0.78 }
    when $n < 0.76 { 0.82 }
    when $n < 0.81 { 0.86 }
    when $n < 0.86 { 0.90 }
    when $n < 0.91 { 0.94 }
    when $n < 0.96 { 0.98 }
    default        { 1.00 }
}
 
while prompt("value: ") -> $value {
    say price-fraction(+$value);
}