text: -- by int
  -- int by int
  SELECT is_jsonb_valid('{"multipleOf":2}', '10');
  -- int by int fail
  SELECT is_jsonb_valid('{"multipleOf":2}', '7');
  -- ignores non-numbers
  SELECT is_jsonb_valid('{"multipleOf":2}', '"foo"');
  -- by number
  -- zero is multiple of anything
  SELECT is_jsonb_valid('{"multipleOf":1.5}', '0');
  -- 4.5 is multiple of 1.5
  SELECT is_jsonb_valid('{"multipleOf":1.5}', '4.5');
  -- 35 is not multiple of 1.5
  SELECT is_jsonb_valid('{"multipleOf":1.5}', '35');
  -- by small number
  -- 0.0075 is multiple of 0.0001
  SELECT is_jsonb_valid('{"multipleOf":0.0001}', '0.0075');
  -- 0.00751 is not multiple of 0.0001
  SELECT is_jsonb_valid('{"multipleOf":0.0001}', '0.00751');