Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> d487f2be8ddcb50d6693b9689906d44db6ef7483862edfa1bb711901bcb39c5c:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^