let\'s translate to decimal like this:
0∙70+5∙7-1+6∙7-2+5∙7-3+5∙7-4 = 0∙1+5∙0.14285714285714+6∙0.020408163265306+5∙0.0029154518950437+5∙0.00041649312786339 = 0+0.71428571428571+0.12244897959184+0.014577259475219+0.002082465639317 = 0.8533944189920910
got It: 0.56557 =0.8533944189920910