24: Add solutions for section "conversions".

Created by  Aaw9nJhsNmfzFih9mKyNw9mV8CgERXJkRa1kK1Kx3LQH  on August 14, 2021
ZN4JRLPZVM5MVVBIFPKDXDP2FAHCD5F2I7EYHCBOVL3HAJTSSCHQC
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