Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 89d268fad7f78ba884b12e9cbbd7d29c7a0487f2708636b09d0227040aa67a0a:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^