[tex]101 \times ( {10}^{ - 9} )^{9} \times (8 \times 10^{81} )[/tex]
[tex]101 \times {10}^{ - 81} \times 8 \times {10}^{81}[/tex]
[tex]808 \times {10}^{ - 81} \times {10}^{81} [/tex]
[tex]808 \times {10}^{ - 81 + 81} = 808 \times {10}^{0} [/tex]
[tex]808 \times 1 = 808[/tex]
Ответ:808