Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> bbbfdcedc31bb5f49c79e35276f7b6f942f2c16949b7734b89f867cdb204fbe7:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^