Submitting a child support calculation in an uncontested divorce?

Spouse and I went to court to file for an uncontested divorce in San Francisco Superior Court. We aren’t fighting about anything and have agreed on custody of our kids. When we turned in the paperwork the court clerk told us we needed to submit a child support calculation. We told her that we agreed to work out child support between ourselves once we get settled in our new places and see what our expenses will be. She said the court will not process our paperwork for the divorce without that calculation. What do we need to do to get a child support calculation or get the court to give us the uncontested divorce without one?