Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 9fb3a41228038bed65eeefdab1f7a2e58cbed9c227c2f629d6f954f94d792bf6:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^