Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e11ef6987bb1a9fa9fe42303f2b0a39fba64148400276a4f82cb2619a66751bf:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^