Converting data links timestamp (milliseconds) value to different format like timestamp (microseconds)

I’m having an issue with data links for Jaeger using lookback=custom&start=${__value.time}&end=${__to} . The time format that Jaeger accepts is a timestamp in microseconds. For example, 1575677100000000 (12-07-2019 01:05 AM). However, what Grafana provides is in milliseconds. For example, 1575677100000000 should be 1575677100 instead. See also https://grafana.com/docs/grafana/latest/features/panels/graph/.

My data source is Prometheus.