Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e99132e8d63ea7e5befc36fae8a3f1313eb3ec8eda0842f64fb3599f0389f66c:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^