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Tohaina

1\times 2\times 9^{2}\times 10^{9}
Me whakakore te 2 me te 2.
2\times 9^{2}\times 10^{9}
Whakareatia te 1 ki te 2, ka 2.
2\times 81\times 10^{9}
Tātaihia te 9 mā te pū o 2, kia riro ko 81.
162\times 10^{9}
Whakareatia te 2 ki te 81, ka 162.
162\times 1000000000
Tātaihia te 10 mā te pū o 9, kia riro ko 1000000000.
162000000000
Whakareatia te 162 ki te 1000000000, ka 162000000000.