calculati:
b)7¹⁹•7⁸³•7=
c)10⁵¹:(10³⁸:10²⁰)=
d)(2¹⁰)³:(2²)¹⁹=
e)2⁵•8³:4⁵=
f)(5•5²•5³•5⁴•...•5¹⁰⁰):5²⁰=
​