Returns a float multiplied by the specified power of 10.
[0-9].e[0-9]
[0-9].E[0-9]
>>> 1.1
1.1
>>> 1.1e0
1.1 # 1.1 * 10**0
>>> 1.1e1
11.0 # 1.1 * 10**1
>>> 1.1e2
110.0 # 1.1 * 10**2
>>> 1.1e3
1100.0 # 1.1 * 10**3
>>> 8e-2
0.08 # 8 * 10**-2