Transfer 123.456 from octal in decimal number system

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let\'s translate to decimal like this:

1∙82+2∙81+3∙80+4∙8-1+5∙8-2+6∙8-3 = 1∙64+2∙8+3∙1+4∙0.125+5∙0.015625+6∙0.001953125 = 64+16+3+0.5+0.078125+0.01171875 = 83.5898437510

got It: 123.4568 =83.5898437510

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