Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 0890f9ebc4e6f6a9129370ddc326262e61bebcf9aefcb58f4d11a681ade4d7e1:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^