Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 85d1f64eef4e761aaec1d19d66e97e4c88de11a8c6fcec886461311d28751f08:14:32
   |
14 |                                 let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^