{Object.keys(dong_info.layers).map((key, index) => (
                    <Paper className={classes.paper} key={index}>
                      가격:{dong_info.layers[key].price}
                      거래날짜: {dong_info.layers[key].tran_date}
                      타입: {dong_info.layers[key].sale_type}
                    </Paper>
                  ))}

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