Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 90b38ad5e56c1a9c452d95747446d9fc672edfa20dabbc224b94cb7ce755021a:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^