Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 9345f7b43fd81c99a3de9f05e482e1413d877a6c9555b91865d444e35b0aa1cf:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^