Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> dc2259ad2a93af9aa35410307ef351925cecd2111fae1645b36b4f4690f18b48:14:32
   |
14 |                                 let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^