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7:22 AM
I just found the problem. The "distance" unit in the function must be considered as degrees. I din't found a way to let it accept meters. I kjust found this convertion table:
| places | degrees | distance |
| ------ | ---------- | -------- |
| 0 | 1.0 | 111 km |
| 1 | 0.1 | 11.1 km |
| 2 | 0.01 | 1.11 km |
| 3 | 0.001 | 111 m |
| 4 | 0.0001 | 11.1 m |
| 5 | 0.00001 | 1.11 m |
| 6 | 0.000001 | 0.111 m |
| 7 | 0.0000001 | 1.11 cm |
| 8 | 0.00000001 | 1.11 mm |
 

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